PROCESS FOR PREPARING VINYL-SUBSTITUTED HETEROCYCLES
摘要
Described are preferred processes for preparing alkenyl-substituted nitrogenous heterocycles such as vinylpyridines, which comprises reacting a corresponding methyl-substituted heterocycle with a C1 compound such as formaldehyde in the vapor phase over a zeolite catalyst having acidic and basic catalytic sites. The preferred zeolite is a medium-pore zeolite, for example having a constraint index of about 0.5 to about 12. Processes of the invention can be conducted as facile, one-step syntheses utilizing relatively low ratios of alkyl-substituted starting heterocycle (e.g. &agr;-picoline or &ggr;-picoline) to formaldehyde while nonetheless achieving high sensitivities and yields of the corresponding alkenyl compound.
申请公布号
WO0234720(A1)
申请公布日期
2002.05.02
申请号
WO2001US32351
申请日期
2001.10.17
申请人
REILLY INDUSTRIES, INC.;MCATEER, COLIN, H.;EDWARDS, AARON, J.;SUBBA RAO, YARLAGADDA, V.
发明人
MCATEER, COLIN, H.;EDWARDS, AARON, J.;SUBBA RAO, YARLAGADDA, V.