Title:
【発明の名称】選択的光化学反応方法
Document Type and Number:
Japanese Patent JP3382267
Kind Code:
B2
Abstract:
PURPOSE:To selectively obtain one of steric isomers of a lactam by radiating light to a clathrate compound consisting of a specific compound and an optically active host compound. CONSTITUTION:A clathrate compound consisting of a compound of formula I (R<1> and R<2> are alkyl; aryl, H or halogen; X is <=10C bivalent organic group; (n) and (m) are 0-3; the ring may have substituent) and an optically active host compound (e.g. tartaric acid derivative) is irradiated with light to obtain a compound of formula II. The irradiation is carried out by pulverizing the crystal of the obtained clathrate compound and preferably stirring the powder to uniformly apply the light to the whole powder. There is no particular restriction on the wavelength and the kind of the light source. The process enables the repeated use of the host compound and is a selective photochemical reaction advantageous for the synthesis of a compound useful in the field of fine chemistry such as pharmaceuticals and agrichemicals in high yield.
Inventors:
Fumio Toda
Application Number:
JP28749092A
Publication Date:
March 04, 2003
Filing Date:
October 26, 1992
Export Citation:
Assignee:
Daicel Chemical Industry Co., Ltd.
International Classes:
C07B53/00; C07D463/00; C07D477/00; C07D487/04; C07D501/08; C07D507/04; C07D507/06; C07D507/08; (IPC1-7): C07D463/00; C07B53/00; C07D487/04; C07D501/08; C07D507/04; C07D507/06; C07D507/08
Domestic Patent References:
| JP1299267A |
Other References:
Ｔｅｔｒａｈｅｄｒｏｎ Ｖｏｌ．４６，Ｎｏ．２３，ｐ．７７５１−７７６２（１９９０）
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)