A stereocontrolled organopalladium route to 2,5-disubstituted pyrrolidine derivatives. Application to the synthesis of a venom alkaloid of the ant species Monomorium latinode
n-pentyl 1-methyl-1H-tetrazol-5-yl (MT) sulfone 1a in the Julia-Kocienski reactions were compared with those of the PT sulfone 1b and the TBT sulfone 1c. The improved stability of the anion derived from the n-pentyl MT sulfone 1a enhanced the efficiency of the olefination reactions and gave higher yields of the product alkenes 3 compared with the PT sulfone 1b. Especially high E-selectivity and high
BACKVALL, JAN-E.;SCHINK, HANS E.;RENKO, Z. DOLOR, J. ORG. CHEM., 55,(1990) N, C. 826-831
作者:BACKVALL, JAN-E.、SCHINK, HANS E.、RENKO, Z. DOLOR
DOI:——
日期:——
A stereocontrolled organopalladium route to 2,5-disubstituted pyrrolidine derivatives. Application to the synthesis of a venom alkaloid of the ant species Monomorium latinode
作者:Jan E. Baeckvall、Hans E. Schink、Z. Dolor Renko
DOI:10.1021/jo00290a010
日期:1990.2
A highly stereoselective and general synthesis of conjugated trans,trans-dienes and trans-alkyl ketones via hydroboration
作者:Ei-ichi Negishi、Takao Yoshida
DOI:10.1039/c39730000606
日期:——
A highly stereoselective (98–99%) and generalsynthesis of conjugated trans,trans-dienes and trans-alkenyl ketones involving a novel class of organoborane [1-chloroalk-1-enyl-(1,1,2-trimethylpropyl)boranes (1)] is reported.