Acid catalyzed intramolecular Diels-Alder reactions in lithium perchlorate-diethyl ether: Enhanced reaction rates and diastereoselectivity
作者:Paul A. Grieco、Scott T. Handy、James P. Beck
DOI:10.1016/s0040-4039(00)77000-6
日期:1994.4
The addition of 1.0–10 mol% of camphorsulfonic acid to 5.0 M lithium perchlorate in diethyl ether dramatically accelerates intramolecular Diels-Alder reactions and enhances the endo-exo selectivity.
Stereoselectivities of thermal and Lewis acid catalyzed intramolecular Diels-Alder reactions of internally activated dienophiles to form 5–11 membered rings
作者:Douglas A. Smith、Kunio Sakan、K.H. Houk
DOI:10.1016/s0040-4039(00)85086-8
日期:1986.1
The thermal and Lewisacidcatalyzed intramolecular Diels-Alderreactions of 1 (n = 5–11) have been studied. The catalyzedreactions efficiently form 7–11 membered rings and produce mainly cis adducts. Lewisacids prevent the five-membered ring forming reaction.