Title:
【発明の名称】N-置換されたグリシンまたはグリシンエステルの製造方法ならびにインジゴ合成方法への適用
Document Type and Number:
Japanese Patent JP3261503
Kind Code:
B2
Abstract:
PCT No. PCT/EP94/04259 Sec. 371 Date Jun. 5, 1996 Sec. 102(e) Date Jun. 5, 1996 PCT Filed Dec. 21, 1994 PCT Pub. No. WO95/18093 PCT Pub. Date Jul. 6, 1995Process for the preparation of an N-substituted glycine ester or an N-substituted glycine acid by reaction of a glyoxylic acid ester half-acetal (hemiacetal) or glyoxylic acid half-acetal (hemiacetal) with an amine and hydrogenation of the intermediate product formed by this reaction, and the use of the process in a process for the preparation of indoxyl and indigo derivatives by cyclization of an N-arylglycine ester, prepared by the above process, in a molten alkali metal carbonate or alkaline earth metal carbonate with or without addition of an alkali metal amide, and if appropriate oxidation of the indoxyl derivative formed by this reaction to give the corresponding indigo derivative.
Inventors:
Koss, Carlo
Application Number:
JP51776795A
Publication Date:
March 04, 2002
Filing Date:
December 21, 1994
Export Citation:
Assignee:
Carlos Koss
International Classes:
B01J23/755; C07B61/00; C07C227/00; C07C227/08; C07C227/26; C07C229/06; C07C229/14; C07D209/36; C07C229/18; C07C229/56; C07D209/40; C07D209/58; C09B7/02; (IPC1-7): C07C227/08; C07C229/14; C07C229/18; C07C229/56; C07D209/36; C07D209/40
Domestic Patent References:
| JP5921643A | ||||
| JP517413A | ||||
| JP58167547A | ||||
| JP50105657A | ||||
| JP5506668A |
Other References:
【文献】米国特許4073804(US,A)
Attorney, Agent or Firm:
Akasaka Saka (1 person outside)