[EN] IMPROVEMENTS IN OR RELATING TO ORGANIC COMPOUNDS<br/>[FR] PERFECTIONNEMENTS APPORTÉS À DES COMPOSÉS ORGANIQUES OU AYANT TRAIT À CEUX-CI
申请人:GIVAUDAN SA
公开号:WO2015059290A1
公开(公告)日:2015-04-30
A process of converting a carbon-carbon multiple bond to a cyclopropane ring, comprising the addition of a N-alkyl-N-nitroso compound to a mixture of alkene precursor, aqueous base and Pd(II)-catalyst, with the N-alkyl-N-nitroso compound obtained directly from an alkyl amine derivative, NaNO2 and an acid via phase separation of the N-alkyl-N-nitroso compound from the aqueous phase.
Diels–Alder reactions of alkyl-substituted dienes with acrylonitriles give good yields and endo-selectivities if catalyzed by (organo)aluminum, (organo)boron or gallium halides. The activity of these group IIIa Lewisacids in this reaction correlates with the coordination strength of their nitrile complexes, which deactivate Lewisacids sufficiently, so that the subsequently added diene partner undergoes
PROCESS FOR THE CYCLOPROPANATION OF OLEFINS USING N-ALKYL-N-NITROSO COMPOUNDS
申请人:Givaudan S.A.
公开号:EP3060535B1
公开(公告)日:2020-08-05
IMPROVEMENTS IN OR RELATING TO ORGANIC COMPOUNDS
申请人:GIVAUDAN S.A.
公开号:US20160280615A1
公开(公告)日:2016-09-29
A process of converting a carbon-carbon multiple bond to a cyclopropane ring, comprising the addition of a N-alkyl-N-nitroso compound to a mixture of alkene precursor, aqueous base and Pd(II)-catalyst, with the N-alkyl-N-nitroso compound obtained directly from an alkyl amine derivative, NaNO
2
and an acid via phase separation of the N-alkyl-N-nitroso compound from the aqueous phase.
ORGANIC COMPOUNDS
申请人:Givaudan, S.A.
公开号:US20170283342A1
公开(公告)日:2017-10-05
A process of converting a carbon-carbon multiple bond to a cyclopropane ring, comprising the addition of a N-alkyl-N-nitroso compound to a mixture of alkene precursor, aqueous base and Pd(II)-catalyst, with the N-alkyl-N-nitroso compound obtained directly from an alkyl amine derivative, NaNO
2
and an acid via phase separation of the N-alkyl-N-nitroso compound from the aqueous phase.