An Asymmetric Hetero-Claisen Approach to 3-Alkyl-3-aryloxindoles
摘要:
The reaction of a chiral N-phenylnitrone derived from Garner's aldehyde with alkylarylketenes generates 3-alkyl-3-aryloxindoles directly in excellent yields and with good to excellent levels of enantioselectivity (up to 90% ee).
An Asymmetric Hetero-Claisen Approach to 3-Alkyl-3-aryloxindoles
摘要:
The reaction of a chiral N-phenylnitrone derived from Garner's aldehyde with alkylarylketenes generates 3-alkyl-3-aryloxindoles directly in excellent yields and with good to excellent levels of enantioselectivity (up to 90% ee).
Catalytic asymmetric α‐arylation of N‐unprotected 3‐substituted oxindoles with diaryliodoniumsalts has been realized by a chiral Lewis acid promoted electrophilic addition and aryl‐rearrangement process. Single C3‐arylated products containing a quaternary carbon center were generated in high enantioselectivity and reactivity.
An Asymmetric Hetero-Claisen Approach to 3-Alkyl-3-aryloxindoles
作者:Nicolas Duguet、Alexandra M. Z. Slawin、Andrew D. Smith
DOI:10.1021/ol901441t
日期:2009.9.3
The reaction of a chiral N-phenylnitrone derived from Garner's aldehyde with alkylarylketenes generates 3-alkyl-3-aryloxindoles directly in excellent yields and with good to excellent levels of enantioselectivity (up to 90% ee).