Formal Highly Enantioselective Organocatalytic Addition of Alkyl Anions to α,β-Unsaturated Aldehydes: Application to the Synthesis of Isotope-Enantiomers
Copper?? No!! Organocatalysis: For the first time, organocatalyticaddition of masked alkyl chains to α,β‐unsaturatedaldehydes is reported (see scheme). The addition of bisphenylsulfonylmethane takes place in high yields and with excellent enantioselectivities. Furthermore, this methodology allows the synthesis of isotope‐enantiomers.
The organocatalytic addition of bis(arylsulfonyl)methane to α,β-unsaturated aldehydes and the synthesis of optically-enriched 3-methyl-alkanols
作者:José Luis García Ruano、Vanesa Marcos、José Alemán
DOI:10.1039/b908963b
日期:——
An indirect organocatalytic method for the beta-methylation of alpha,beta-unsaturated aldehydes that involves the addition of bis(arylsulfonyl)methane catalyzed by prolinol derivatives and further elimination of the chameleonic sulfonyl groups is presented.