An improved procedure for aldehyde-to-alkyne homologation via 1,1-dibromoalkenes; synthesis of 1-bromoalkynes
摘要:
1,1-Dibromoalkenes, 1-bromoalkynes and alkynes could be obtained in excellent yields by homologation of functionnalized aldehydes through a modified Mc Kelvie-Corey procedure.
Selective debromination of 1,1-dibromoalkenes; a new access to Di- or trisubstituted alkenes
作者:D. Grandjean、P. Pale
DOI:10.1016/s0040-4039(00)77515-0
日期:1993.2
1,1-Dibromoalkenes were selectively debrominated by halogen-metal exchange. Depending on reagents and conditions, E-bromoalkenes can be obtained with very high stereoselectivity.