公开(公告)号：DE2908212A1

公开(公告)日：1980-09-11

申请号：DE2908212

申请日：1979-03-02

Applicant: BASF AG

Inventor： KEMPE UWE DIPL CHEM DR ,  DOCKNER TONI DIPL CHEM DR ,  FRANK ANTON ,  KARN HELMUT

IPC: C07D233/54 ,  C07D233/64

Abstract: A process for the manufacture of 5-hydroxymethylimidazoles by reaction of an imidazole with formaldehyde or an oligomer of formaldehyde in aqueous hydrochloric acid solution containing from 5 to 18% by weight of hydrogen chloride, at from 80 DEG to 160 DEG C., if desired in a closed system under pressure, followed by isolation in the form of its hydrochloride of the 5-hydroxymethylimidazole obtained.

公开(公告)号：DE2745873A1

公开(公告)日：1979-04-19

申请号：DE2745873

申请日：1977-10-12

Applicant: BASF AG

Inventor： FISCHER ROLF DIPL CHEM DR ,  WEITZ HANS-MARTIN DIPL CHEM DR ,  KEMPE UWE DIPL CHEM DR

IPC: C07C121/30 ,  C07C120/00

Abstract: 1-Cyano-1, 3-butadiene (I), is prepd. by heating a 1-cyano-4-1-5 C-acyloxy-2-butene (II), pref. 1-cyano-4-acetocy-2-butene (IIcarrier gases, e.g. N2, may be used. The reaction zone is pref. packed with inert fillers, e.g. of al2O3, silicates or stainless steel. (I) can be prepd. in good yields, e.g. (61%, from (II)obtd. as by-prod. in 1,4-dicyano-2-butene prepn. by butenediol acetate reaction with HCN.