Chirality Transfer in Gold(I)-Catalysed Direct Allylic Etherifications of Unactivated Alcohols: Experimental and Computational Study
作者:Graeme Barker、David G. Johnson、Paul C. Young、Stuart A. Macgregor、Ai-Lan Lee
DOI:10.1002/chem.201501607
日期:2015.9.21
necessary to ensure efficient and general chirality transfer. Computationalstudies suggest that the efficiency of chirality transfer is linked to the aggregation of the alcohol nucleophile around the reactive π‐bound Au–allylic ether complex. With a single alcohol nucleophile, a high degree of chirality transfer is predicted. However, if three alcohols are present, alternative proton transfer chain mechanisms
Nucleophilic Addition of α-Metallated Carbamates to Planar Chiral Cationic η<sup>3</sup>-Allylmolybdenum Complexes: A Stereochemical Study
作者:Philip Kocienski、John Christopher、Richard Bell、Bernhard Otto
DOI:10.1055/s-2004-834917
日期:——
Chiral α-(O-carbamoyl)alkyl- and α-(N-carbamoyl)alkylcopper(I) reagents derived from (-)-sparteine-mediated asymmetric lithiation of hindered carbamates react with cationic η 3 -allylmolybdenum complexes with retention of configuration.
衍生自 (-)-sparteine 介导的受阻氨基甲酸酯不对称锂化的手性 α-(O-氨基甲酰基)烷基-和 α-(N-氨基甲酰基)烷基铜 (I) 试剂与阳离子 η 3 -烯丙基钼配合物反应,并保留构型。
Highly Stereoselective C–C Bond Formation by Rhodium-Catalyzed Tandem Ylide Formation/[2,3]-Sigmatropic Rearrangement between Donor/Acceptor Carbenoids and Chiral Allylic Alcohols
作者:Zhanjie Li、Brendan T. Parr、Huw M. L. Davies
DOI:10.1021/ja303023n
日期:2012.7.4
The tandem ylide formation/[2,3]-sigmatropic rearrangement between donor/acceptor rhodium carbenoids and chiral allyl alcohols is a convergent C-Cbond forming process, which generates two vicinal stereogenic centers. Any of the four possible stereoisomers can be selectively synthesized by appropriate combination of the chiral catalyst Rh(2)(DOSP)(4) and the chiral alcohol.
Correction to Synthesis of Enantioenriched Tertiary Boronic Esters from Secondary Allylic Carbamates. Application to the Synthesis of C30 Botryococcene