A compound useful as a building block for the manufacture of various compounds is represented by Formula A or D.
In Formula A and D, z is 0 or 1; Q is a heteroatom; R1 through R11 and Ra through Rf are each independently hydrogen, a substituted or unsubstituted hydrocarbyl group, a substituted or unsubstituted heteroatom containing hydrocarbyl group, or a functional group; d, e and f are each independently 0 or greater; each of A, B and D is independently a carbon atom or a heteroatom; and two or more of R1 though R11, Ra through Rf and Y optionally combine to form a ring. In some embodiments, R8 and R9 combine to form a carbonyl group. In some embodiments, R2 and Y combine to form a ring with the Q atom. In some embodiments, the ring includes at least one double bond.
The invention provides heterocyclic compounds with quaternary centers and methods of preparing compounds. Methods include the method for the preparation of a compound of Formula (II):
comprising treating a compound of Formula (I):
with a transition metal catalyst and under alkylation conditions as valence and stability permit.
[EN] QUATERNARY HETEROATOM CONTAINING COMPOUNDS<br/>[FR] COMPOSÉS CONTENANT UN HÉTÉROATOME QUATERNAIRE
申请人:CALIFORNIA INST OF TECHN
公开号:WO2012178129A3
公开(公告)日:2013-06-13
Enantioselective construction of quaternary N-heterocycles by palladium-catalysed decarboxylative allylic alkylation of lactams
作者:Douglas C. Behenna、Yiyang Liu、Taiga Yurino、Jimin Kim、David E. White、Scott C. Virgil、Brian M. Stoltz
DOI:10.1038/nchem.1222
日期:2012.2
The enantioselectivesynthesis of nitrogen-containingheterocycles (N-heterocycles) represents a substantial chemical research effort and resonates across numerous disciplines, including the totalsynthesis of natural products and medicinal chemistry. In this Article, we describe the highly enantioselective palladium-catalysed decarboxylative allylic alkylation of readily available lactams to form