Expanding the Scope of Donor/Acceptor Carbenes to N-Phthalimido Donor Groups: Diastereoselective Synthesis of 1-Cyclopropane α-Amino Acids
摘要:
Warming of 4-phthalimido-N-mesyl-1,2,3-triazole in the presence of alkenes followed by silica gel induced hydrolysis results in a highly diastereoselective and catalyst-free entry to N-phthalimidocyclopropanecarboxaldehydes.
Expanding the Scope of Donor/Acceptor Carbenes to N-Phthalimido Donor Groups: Diastereoselective Synthesis of 1-Cyclopropane α-Amino Acids
摘要:
Warming of 4-phthalimido-N-mesyl-1,2,3-triazole in the presence of alkenes followed by silica gel induced hydrolysis results in a highly diastereoselective and catalyst-free entry to N-phthalimidocyclopropanecarboxaldehydes.
Synthesis of [3a,7a]-Dihydroindoles by a Tandem Arene Cyclopropanation/3,5-Sigmatropic Rearrangement Reaction
作者:Sidney M. Wilkerson-Hill、Brandon E. Haines、Djamaladdin G. Musaev、Huw M. L. Davies
DOI:10.1021/acs.joc.8b00812
日期:2018.8.3
functionalization products arise from ring-opening of the [3+2]-cycloadducts. Computational studies suggest that the formalcycloaddition process takes places through a tandem arene cyclopropanation/6π electrocyclization/6π electrocyclic ring-opening/3,5-sigmatropic rearrangement reaction, which also accounts for the distinctive regioselectivity of the formalcycloadditionreaction.