共查询到20条相似文献,搜索用时 15 毫秒
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Shuji YasuikeSatoru Okajima Kentaro YamaguchiHiroko Seki Jyoji Kurita 《Tetrahedron》2003,59(27):4959-4966
Racemic 2,2′-bis[diarylstibano]-1,1′-binaphthyls [(±)-BINASbs] and 2,2′-bis[di(p-tolyl)bismuthano]-1,1′-binaphthyl [(±)-BINABi], which are the antimony and bismuth congeners of BINAP, have been prepared from 2,2′-dibromo-1,1′-binaphthyl (DBBN) via 2,2′-dilithio-1,1′-binaphthyl intermediate by treatment with the appropriate metal halides [(p-Tol)2SbBr, Ph2SbBr and (p-Tol)2BiCl]. The optical resolution of the (±)-BINASbs could be achieved via the separation of a mixture of the diastereomeric Pd-complexes derived from the reaction of (±)-BINASbs with di-μ-chlorobis{(S)-2-[1-(dimethylamino)-ethyl]phenyl-C1,N}dipalladium(II). Optically active (R)-BINASb and (R)-BINABi could be also obtained from optically active (R)-DBBN by the same procedure. The enantiopure BINASbs have been shown to be effective chiral ligands for the rhodium-catalyzed asymmetric hydrosilylation of ketones. 相似文献
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The applications of catalytic transformations of SO2 into sulfur-containing organic compounds, reported in the literature, are briefly reviewed. The authors' studies in this field of chemistry,viz., the hydrosulfination of alkenes, the synthesis of γ-oxo sulfonesvia hydrosulfination, and the synthesis of aromatic sulfinic acids from diazonium salts, are summarized. Current results on the synthesis of the new sulfinato complex [Pd(SO2Ph)(Cl)dppp] and its hydrogenation to PhSO2H are presented, and a mechanism for the catalytic synthesis of sulfinic acids is proposed. The structure of ([Pd(μ-Cl)(dppp)l2 2+(SO4)2?·4SO2 salt is studied by X-ray diffraction analysis. 相似文献
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Hélène PellissierAuthor Vitae 《Tetrahedron》2011,67(21):3769-3802
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Gareth J. Rowlands Author Vitae 《Tetrahedron》2009,65(42):8603-1107
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Recent developments in asymmetric aziridination 总被引:1,自引:0,他引:1
Hélène Pellissier Author Vitae 《Tetrahedron》2010,66(8):1509-94
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A. A. Shestopalov L. A. Rodinovskaya A. M. Shestopalov V. P. Litvinov 《Russian Chemical Bulletin》2005,54(4):992-996
Three-component reactions of 4-hydroxycoumarin, carbonyl compounds, and malono-nitrile or alkyl cyanoacetates in ethanol in
the presence of Et3N as a catalyst give substituted 2-amino-5-oxo-4,5-dihydropyrano[3,2-c]chromenes.
Dedicated to Academician V. I. Minkin on the occasion of his 70th birthday.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 968–972, April, 2005. 相似文献
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Agnieszka Kudelko 《Tetrahedron》2011,67(44):8502-8508
Reactions of symmetrical 1,1′-diphenylthiodiacetic acid dihydrazide and triethyl orthoesters in the presence of catalytic amount of glacial acetic acid resulted in the formation of three heterocyclic products: the appropriate bis(1,3,4-oxadiazol-2-yl-phenylmethyl) sulfides, 2-benzyl-1,3,4-oxadiazoles and 2-benzoyl-1,3,4-oxadiazoles. The presence of the latter two compounds is connected with carbon-sulfur fission in the molecule of the starting hydrazide. The identity of the unexpected fission products was confirmed by parallel syntheses of the model 1,3,4-oxadiazoles from phenylacetic acid hydrazide and 2-hydroxymethyl-1,3,4-oxadiazole derivatives. 相似文献
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Gareth J. Rowlands Author Vitae 《Tetrahedron》2010,66(9):1593-501
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Fabio Marchetti Claudio Pettinari Riccardo Pettinari 《Coordination chemistry reviews》2005,249(24):2909-2945
This review summarizes the literature on 4-acyl-5-pyrazolone ligands, their synthesis, characterization and coordination chemistry toward main group, transition, lanthanide and actinide metals and relevant applications of their metal complexes. 相似文献
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Hélène Pellissier Author Vitae 《Tetrahedron》2006,62(24):5559-5601
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Jacques Muzart Author Vitae 《Tetrahedron》2009,65(40):8313-715