[EN] PROCESS FOR THE CYCLOPROPANATION OF OLEFINS USING N-METHYL-N-NITROSO COMPOUNDS<br/>[FR] PROCÉDÉ DE CYCLOPROPANATION D'OLÉFINES À L'AIDE DE COMPOSÉS N-MÉTHYL-N-NITROSO
申请人:GIVAUDAN SA
公开号:WO2017046122A1
公开(公告)日:2017-03-23
A process of converting a carbon-carbon double bond on a substrate into a cyclopropane ring, which method comprises the step of treating the substrate with a N-alkyl-N-nitroso compound, a transition metal catalyst and an aqueous base, wherein the N-alkyl-N-nitroso compound is formed by reacting an alkyl amine with an alkali metal nitrite in the presence of a mono-basic or di-basic acid, or a mixture thereof, and wherein the N-alkyl-N-nitroso compound is not distilled before it is mixed with the substrate, catalyst and base.
将底物上的碳-碳双键转化为环丙烷环的过程,该方法包括用N-烷基-N-亚硝基化合物、过渡金属催化剂和水性碱处理底物的步骤,其中N-烷基-N-亚硝基化合物是通过在单碱性或双碱性酸或二者的混合物存在下将烷基胺与碱金属亚硝酸盐反应而形成的,且N-烷基-N-亚硝基化合物在与底物、催化剂和碱混合之前未经蒸馏。