Herein, we report a facile and highly atom-economic approach to 2-phosphafurans by using simple 2-chloroethylphosphine and acetylenic ketones. The key step of this protocol utilizes the Lewis acidity of electrophilic phosphinidenes to induce an intramolecular cyclization with enones. Dearomative hetero-Diels-Alder reactions of 2-phosphafurans provide two series of bicyclic phosphacycles. This rare synthetic application of Lewis acidity of electrophilic phosphinidene complexes represents a new frontier of phosphinidene chemistry.

利用脂酶的特异性催化作用,研究了正已烷体系中大豆粉末磷脂与全氢化大豆油的酯交换反应.利用碘值和产率为指标,考察了酶的种类及用量、底物摩尔比、温度、时间等因素对酯交换反应的影响,通过单因素和正交实验优化了大豆粉末磷脂与全氢化大豆油酯交换反应条件.发现在25％磷脂酶A1(以磷脂质量为基准)催化下,摩尔比4∶1的全氢化大豆油和大豆粉末磷脂的正己烷溶液(磷脂浓度为0.20 g/mL),在50℃下反应24 h,得到产率为72.9％的改性磷脂.与原料磷脂相比,改性磷脂的碘值由89 gI/100 g降至52 gI/100 g,脂肪酸组成变化较大,硬脂酸含量约为原料磷脂的9倍,不饱和脂肪酸亚麻酸和亚油酸含量降低了约一半,实现了大豆粉末磷脂的结构修饰.

大豆卵磷脂是大豆油精炼过程中毛油水化脱胶的副产物,是脂肪酸甘油酯通过磷酸根与胆碱连接而成的化合物,因其结构中含有磷酸根、胆碱构成的亲水基团和脂肪酸链构成的疏水基团,成为一种优良的天然乳化剂,广泛应用于食品、饲料、化妆品等许多领域.此外,卵磷脂还具有降低胆固醇,提高血清中胆碱水平,增强记忆力的作用,被用于医药领域.于是,有关卵磷脂提取的研究深受重视.本文以大豆粉末磷脂为原料,利用单因素实验研究了浸提时间、乙醇浓度、浸提温度、乙醇用量和浸提次数对卵磷脂得率的影响,结合正交实验优化得出大豆卵磷脂的最佳提取工艺:在10mL/g粉末磷脂的95％的乙醇中,35℃下,浸提25min,大豆卵磷脂得率可达35.1％.该项研究为大豆卵磷脂的工业化生产提供理论依据.

The catalytic oxidation of alkenes to α-diketones is unprecedented. A new oxidation of alkenes, catalyzed by a ruthenium complex, which allows an efficient route to α-diketones using TBHP as an oxidant is described. This methodology is highly functional group tolerant, is practically convenient, requires no additional ligand, and operates under mild conditions with short reaction times. Based upon experimental observations, a plausible mechanism is proposed.

Title reaction proceeds in the absence of transition metal catalysts, is operationally simple and tolerates a wide variety of functional groups like cyano, amide, aromatic halide, ether, ketone groups and C—C double bonds.

The first ruthenium-catalyzed cross-coupling of aldehydes with arylboronic acids is reported. Various aliphatic and aromatic aldehydes are transformed to the corresponding arylketones. A total of 31 examples with moderate to excellent yields are presented, together with the results of an initial mechanistic investigation.

Chemistry – A European JournalVolume 17, Issue 15 p. 4085-4089 Communication Bu4NI-Catalyzed CO Bond Formation by Using a Cross-Dehydrogenative Coupling (CDC) Reaction Long Chen, Long Chen Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorErbo Shi, Erbo Shi Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorZhaojun Liu, Zhaojun Liu Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorShulin Chen, Shulin Chen Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorWei Wei, Wei Wei Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorHong Li, Hong Li Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorKai Xu, Kai Xu Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorProf. Dr. Xiaobing Wan, Corresponding Author Prof. Dr. Xiaobing Wan [email protected] Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334 State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this author Long Chen, Long Chen Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorErbo Shi, Erbo Shi Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorZhaojun Liu, Zhaojun Liu Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorShulin Chen, Shulin Chen Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorWei Wei, Wei Wei Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorHong Li, Hong Li Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorKai Xu, Kai Xu Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this authorProf. Dr. Xiaobing Wan, Corresponding Author Prof. Dr. Xiaobing Wan [email protected] Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334 State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000 (China)Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow (Suzhou) University, Suzhou 215123 (P.R. China), Fax: (+86) 512-6588-0334Search for more papers by this author First published: 08 March 2011 https://doi.org/10.1002/chem.201100192Citations: 259Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Graphical Abstract The crème de la crème! A practical and simple Bu4NI-catalyzed CO bond formation was achieved by using a cross-dehydrogenative coupling (CDC) reaction with tert-butyl hydroperoxide (TBHP) as the ultimate oxidant (see scheme; R1=aryl, heteroaryl, alkyl; R2, R3=alkyl, alkyl halide). This approach is the most straightforward method to date for the synthesis of α-acyloxy ethers. A plausible mechanism has been proposed. Supporting Information Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Filename Description chem_201100192_sm_miscellaneous_information.pdf636 KB miscellaneous_information Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. References 1For reviews on this topic, see: 1aD. A. Colby, R. G. Bergman, J. A. Ellman, Chem. Rev. 2010, 110, 624–655; 1bL. Ackermann, R. Vicente, A. R. Kapdi, Angew. Chem. 2009, 121, 9976–10011; Angew. Chem. Int. Ed. 2009, 48, 9792–9826; 1cO. Daugulis, H.-Q. Do, D. Shabashov, Acc. 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AbstractThe first report on the Ru‐catalyzed cross‐coupling of aliphatic as well as aromatic aldehydes with arylboronic acids to give aryl ketones (31 examples) is given.

ChemInformVolume 42, Issue 22 Heterocyclic Compounds ChemInform Abstract: Ru-Catalyzed Aerobic Oxidative Coupling of Arylboronic Acids with Arenes. Hong Li, Hong Li Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this authorWei Wei, Wei Wei Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this authorYuan Xu, Yuan Xu Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this authorChao Zhang, Chao Zhang Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this authorXiaobing Wan, Xiaobing Wan Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this author Hong Li, Hong Li Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this authorWei Wei, Wei Wei Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this authorYuan Xu, Yuan Xu Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this authorChao Zhang, Chao Zhang Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this authorXiaobing Wan, Xiaobing Wan Key Lab. Org. Synth., Coll. Chem. Chem. Eng., Soochow Univ., Suzhou 215123, Peop. Rep. ChinaSearch for more papers by this author First published: 05 May 2011 https://doi.org/10.1002/chin.201122151Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume42, Issue22May 31, 2011 RelatedInformation

C12H9BrN2O2, orthorhombic, Pbca (no. 61), a = 15.140(2) angstrom, b = 6.7130(8) angstrom, c = 23.575(3) angstrom, v= 2396.0 angstrom(3), Z = 8, R-gt(F) = 0.037, wR(ref)(F-2) = 0.146, T = 296 K.

A Ru-catalyzed oxidative coupling of arenes with boronic acids using molecular oxygen via direct C-H activation is reported. Both the scope and the mechanism of the process are discussed.

C38H48ClFeN2OPPd, monoclinic, P2(1)/c dc (no. 14), a = 18.378(4) angstrom, b = 11.744(2) angstrom, c = 18.808(4) angstrom, beta = 115.89(3)degrees, V = 3652.1 angstrom(3), Z = 4, R-gt(F) = 0.047, wR(ref)(F-2) = 0.119, T = 291 K.

In the title compound, C(28)H(18)O(4)·2C(3)H(7)NO, the dihedral angle between the benzene rings and the anthracene system is 74.05 (12)°. A crystallographic inversion centre is located in the middle of the anthracene unit. The dimethyl-formamide solvent mol-ecules are partially disordered over two positions of approximately equal occupancy [0.529 (6):0.471 (6)]. Inter-molecular O-H⋯O hydrogen bonds with the major occupancy formamide O atom as acceptor result in the formation of 2:1 solvate-complex aggregates, which are alternately linked to shorter solvate units via weak inter-molecular C-H⋯O contacts generated from the rotational disorder of the formamide O atom (minor occupancy component). Weak C-H⋯π inter-actions between the solvent mol-ecules as the donor and the outer anthracene rings support these contacts in the crystal structure for both disorder components.

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

In the title compound, C28H18O4·2C3H7NO, the dihedral angle between the benzene rings and the anthracene system is 74.05 (12)°. A crystallographic inversion centre is located in the middle of the anthracene unit. The dimethylformamide solvent molecules are partially disordered over two positions of approximately equal occupancy [0.529 (6):0.471 (6)]. Intermolecular O—H...O hydrogen bonds with the major occupancy formamide O atom as acceptor result in the formation of 2:1 solvate–complex aggregates, which are alternately linked to shorter solvate units via weak intermolecular C—H...O contacts generated from the rotational disorder of the formamide O atom (minor occupancy component). Weak C—H...π interactions between the solvent molecules as the donor and the outer anthracene rings support these contacts in the crystal structure for both disorder components.

The granule and crystal structures of corn starch were assayed by X-ray diffraction and SEM after ultra-high pressure treatment under different reaction conditions such as pressure level, holding time and concentration. Among them, pressure level was shown to play a major role in corn starch gelatinization as evidenced by the observation that the degree of gelatinization increased with the increasing pressure level. Other reaction conditions may also play a role once the pressure level reaches the threshold of gelatinization. The degree of gelatinization decreased while increasing the suspension concentration.

Two water-soluble palladium (II) complexes 2 and 4 have been synthesized from easily available 2-arylnaphthoxazole derivatives. They were successfully applied to the Suzuki coupling of aryl bromides with phenylboronic acid in water at 100 degrees C under phosphine-free conditions. Copyright (C) 2008 John Wiley & Sons, Ltd.

In the title compound, C25H34O4, one n-hexyl chain of the hexyloxy group adopts a fully extended all-trans conformation, and the other n-hexyl chain displays disorder with site occupancies of 0.470 (3) and 0.530 (3). The dihedral angle between the benzene rings is 44.5 (3)°. In the crystal structure, intermolecular O—H⋯O hydrogen bonds form dimers via crystallographic inversion centres.

A variety of 2-arylnaphtho[1,2-d]oxazole derivatives were efficiently synthesized in moderate to high yields by the reaction of aromatic aldehydes with 1-amino-2-naphthol derivatives in the presence of triethylamine in refluxing ethanol in air. Seven new 2-arylnaphtho[1,2-d]oxazole derivatives were obtained and characterized by the spectral data and elemental analysis. In addition, the X-ray crystal structures of 2-[4-(N,N-dimethylamino)phenyl]naphtho[1,2-d] oxzole (3d) and 1,1′-bis(naphtho[1,2-d]oxazol-2-yl)ferrocene (3n) have been determined.