Studies towards streptonigrinoids: formal synthesis of lavendamycin methyl ester
作者:Marco A. Ciufolini、Michael J. Bishop
DOI:10.1039/c39930001463
日期:——
A modified Knoevenagel–Stobbe pyridine formation and a thermolytic nitrene insertion are the key steps in a practical new synthesis of lavendamycin methyl ester.
1,3-O- to -C-alkyl migration of 1-alkenyl alkyl acetals and ketals catalyzed by boron trifluoride. Selective cross- and regioselective aldol type reactions
1,3-Alkyl migration of 1-alkenyl alkyl acetals and ketals is effectively catalyzed by trifluoroborane etherate to give cross aldol type products selectively. Remarkable regio-selectivity is observed in the synthesis of α-alkyl-β-alkoxy-ketones.