Rhodium-Catalyzed Asymmetric Hydroformylation of N-Allylamides: Highly Enantioselective Approach to β2-Amino Aldehydes
作者:Xiaowei Zhang、Bonan Cao、Shichao Yu、Xumu Zhang
DOI:10.1002/anie.201000955
日期:2010.6.1
You′re having a lahf! The asymmetrichydroformylation (AHF) of allylic compounds, catalyzed by a rhodium–yanphos complex, is a direct and concise route to β2‐amino aldehydes, acids, and alcohols with excellent enantioselectivity (see scheme; TON=turnover number, acac=acetylacetonate).
你在做饭!的不对称加氢甲酰基烯丙基化合物(AHF),由铑- yanphos配合物催化,是对β的直接和简明路线2 -氨基醛,酸,和具有优异的对映选择性醇(参见方案; TON =周转数,ACAC =乙酰)。
Cyclopentanoid allysilanes in synthesis: Generation via intramolecular ene reaction of activated 1,6-dienes and application to the synthesis of functionalized diquinanes
A new general route to -1,2-disubstituted cyclopentanoid allylsilanes useful in di-and triquinane synthesis is described based on intramolecular enereaction of activated 1,6-dienes featuring a homoallylsilane unit as the ene donor.
Reactions of (triphenylstannyl)carbodiimides and -cyanamide with organic halides and isothiocyanates
作者:Raymond A. Cardona、Eugene J. Kupchik
DOI:10.1016/s0022-328x(00)81776-3
日期:1972.9
bromide complex (IV). The reaction of N-(triphenylstannyl)-N′-tritylcarbodiimide (II) with trityl chloride also afforded ditritylcarbodiimide, but the reaction of (II) with benzyl bromide afforded a benzyltritylcyanamide/triphenyltin bromide complex (V). The complexes (IV) and (V) were prepared also by the reaction of triphenyitin bromide with the corresponding dialkylcyanamide. Some evidence that the nitrile