Asymmetric organocatalytic Michael–hemiacetalization reaction: access to chiral spiro cis-δ-lactones by in situ oxidation of spiro δ-lactols
摘要:
Asymmetric tandem Michael-hemiacetalization reaction between 1-nitromethylcycloalkanol and alpha,beta-unsaturated aldehydes was investigated, which provided an efficient and facile synthesis for spiro cis-delta-lactones by in situ oxidation of Spiro delta-lactols in good overall yields with high to excellent enantioselectivities and diastereoselectivities. (C) 2013 Elsevier Ltd. All rights reserved.
Asymmetric tandem Michael-hemiacetalization reaction between 1-nitromethylcycloalkanol and alpha,beta-unsaturated aldehydes was investigated, which provided an efficient and facile synthesis for spiro cis-delta-lactones by in situ oxidation of Spiro delta-lactols in good overall yields with high to excellent enantioselectivities and diastereoselectivities. (C) 2013 Elsevier Ltd. All rights reserved.