PROCESS FOR PREPARING PYRROLIDONE COMPOUND

    公开(公告)号:KR810000657B1

    公开(公告)日:1981-06-16

    申请号:KR770001822

    申请日:1977-08-06

    申请人: PFIZER

    发明人: NELSON A

    IPC分类号: A61K31/40 C07D207/27

    摘要: 1-5-Disubstituted-2-pyrrolidones or their intermediates (I; Q = -C(O)OR3, tetrazol-5-yl, -C(O)NHP4; A is single or cis-double bond; B is single or trans-double bond; U = H OH or HO H; R2 = α -thienyl, phenyl, phenoxy; R3 = H, Cl1-5 alkyl, phenyl or p-biphenyl; R4 = -C(O)R5, -SO2R5; R5 = phenyl, C1-5 alkyl) or alkali or alkali earth metal or ammonium salt contg. C5 epimer or carboxylate or tetrazol-5-yl, having a selective and biological activity, were prepd. by reduction of C15-keto group in the intermediate of pyrrolidone (II). Thus, 5 -(tetrahydropyran-2'-yl oxymethyl-2-pyrrolidone 1 was prepd. from 5-D-hydroxymethylene-2-pyrrolidone, methylene chloride, dihydropyran, p-toluene sulfonic acid.

    1,4-부탄디올로부터 N-메틸 피롤리돈의 제조방법
    38.
    发明公开
    1,4-부탄디올로부터 N-메틸 피롤리돈의 제조방법 有权
    从1,4-丁二醇制备N-甲基吡咯烷酮的方法

    公开(公告)号:KR1020110058002A

    公开(公告)日:2011-06-01

    申请号:KR1020090114652

    申请日:2009-11-25

    摘要: PURPOSE: A method for preparing gamma-butarolactone and N-methyl pyrrolidone is provided to save energy and to easily isolate N-methyl pyrrolidone. CONSTITUTION: A method for preparing N-methyl pyrrolidone comprises: a step of performing dehydrogenation of 1,4-butanediol(BDO) under the presence of hydrogen to prepare gamma-butyrolactone; a step of supplying monomethylamine(MMA) solution and gamma-butyrolactone(GBL) in a reactor to isolated N-methyl pyrrolidone(NMP) and water; and a step of mixing the isolated water and MMA to prepare monomethylamine solution.

    摘要翻译: 目的:提供制备γ-丁内酯和N-甲基吡咯烷酮的方法,以节省能量并容易地分离N-甲基吡咯烷酮。 构成:制备N-甲基吡咯烷酮的方法包括:在氢存在下进行1,4-丁二醇(BDO)脱氢以制备γ-丁内酯的步骤; 在反应器中将单甲胺(MMA)溶液和γ-丁内酯(GBL)供给到分离的N-甲基吡咯烷酮(NMP)和水中的步骤; 以及将分离的水和MMA混合以制备单甲胺溶液的步骤。