Tandem Zirconocene Homologation−Aldimine Allylation
摘要:
[GRAPHICS]Hydrozirconation of internal and terminal alkynes followed by in situ transmetalation to dimethylzinc and treatment with diiodomethane leads to chain extended allylic organometallics. Addition to N-phosphinoyl or N-sulfonyl aldimines provides homoallylic amines in 48-87% yield and 3:2 to > 20:1 diastereomeric ratios favoring ant products.
Tandem Zirconocene Homologation−Aldimine Allylation
作者:Peter Wipf、Christopher Kendall
DOI:10.1021/ol0163880
日期:2001.8.1
[GRAPHICS]Hydrozirconation of internal and terminal alkynes followed by in situ transmetalation to dimethylzinc and treatment with diiodomethane leads to chain extended allylic organometallics. Addition to N-phosphinoyl or N-sulfonyl aldimines provides homoallylic amines in 48-87% yield and 3:2 to > 20:1 diastereomeric ratios favoring ant products.