Synthesen von ?-substituierten ?-Nitrocarbons�ureestern aus ?-Nitrocycloalkanonen
作者:Walter Huggenberg、Manfred Hesse
DOI:10.1002/hlca.19830660519
日期:1983.7.27
Synthesis of ω‐Nitroalkanoates Substituted in ω‐Position from α‐Nitrocycloalkanonesα‐Nitrocycloalkanones substituted in α‐position by a functionalized alkyl residue underwent ring opening to the corresponding chain derivatives by intermolecular nucleophilic attack; ω‐nitroalkanoates substituted in ω‐position were obtained (Scheme 1). The so formed methyl 6‐nitro‐9‐oxodecanoate (3) was used to prepare methyl 8‐(2‐methyl‐1,3‐dioxolan‐2‐yl)octanoate (15), an intermediate in the synthesis of the sex phermone of the honey bee.
Unprecedented, selective Nef reaction of secondary nitroalkanes promoted by DBU under basic homogeneous conditions
Secondary nitrocompounds can be converted into the corresponding ketones under basic conditions using DBU in acetonitrile. Primary nitroalkanes are Unaffected by these conditions. (C) 2002 Elsevier Science Ltd. All rights reserved.