The synthetically important 2-alkenylchromane derivatives were constructed in good yields under metal-free condition via inverse electron demand Hetero-Diels–Alder reaction of o-quinonemethides with unactivated dienes. This strategy features mild condition, good diastereoselectivity and wide substrate scope.
INOUE, TSUTOMU;INOUE, SEIICHI;SATO, KIKUMASA, CHEM. LETT.,(1990) N, C. 55-58
作者:INOUE, TSUTOMU、INOUE, SEIICHI、SATO, KIKUMASA
DOI:——
日期:——
Calcium(II) catalyzed regioselective dehydrative cross-coupling reactions: Practical synthesis of internal alkenes and benzopyrans
作者:Srinivasarao Yaragorla、Abhishek Pareek、Ravikrishna Dada、Abdulrahman I. Almansour、Natarajan Arumugam
DOI:10.1016/j.tetlet.2016.11.027
日期:2016.12
the regioselectivesynthesis of internal alkenes through a dehydrative cross-coupling and direct coupling procedure has been described using the environmentally benign Ca(II) catalyst. Several alkenes and alcohols underwent the coupling reaction under solvent-free conditions in a short time to produce the desired alkenes. This method is further extended to show the application in the synthesis of novel