USEFUL SYNTHESIS OF BENZOTRIAZOLE PHOTOSTABILIZERS BY REDUCTIVE CARBONYLATION OF ORTHO-NITROPHENYLAZO COMPOUNDS, CATALYZED BY RU3(CO)12 IN THE PRESENCE OF NET3

被引：21

作者：

PIZZOTTI, M

CENINI, S

PSARO, R

COSTANZI, S

机构：

[1] ENICHEM SYNTH,SAN DONATO MILANE,ITALY

[2] CNR CTR,I-20133 MILAN,ITALY

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1990年 / 63卷 / 03期

关键词：

D O I：

10.1016/0304-5102(90)85121-W

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ru3(CO)12 catalyzes the reductive carbonylation of ortho-nitrophenylazo compounds to give the corresponding benzotriazoles, in ortho-dichlorobenzene or ortho-xylene, at 180-200-degrees-C and 70-80 atm, although with rather low conversion and selectivity. Both conversion and selectivity are markedly increased by addition of a base such as Et3N, which acts, under our conditions, as a deoxygenating agent of the nitro group. The mechanism of the reaction has been investigated by studying the possible intermediates.

引用

页码：299 / 304

页数：6

共 18 条

[11] THE REDUCTION OF SOME ORTHO-NITROPHENYLAZO DYES WITH GLUCOSE - A GENERAL-SYNTHESIS OF 2-ARYL-2H-BENZOTRIAZOLE 1-OXIDES
ROSEVEAR, J
WILSHIRE, JFK
[J]. AUSTRALIAN JOURNAL OF CHEMISTRY, 1982, 35 (10) : 2089 - 2093
[12] SCHEN J, 1988, J AM CHEM SOC, V110, P2414
[13] N-N DOUBLE-BOND CLEAVAGE AND THE ORTHO METALATION OF AZOARENES USING RU3(NPH)(CO)10
SMIEJA, JA
GOZUM, JE
GLADFELTER, WL
[J]. ORGANOMETALLICS, 1987, 6 (06) : 1311 - 1317
[14] 1976, Patent No. 2551853
[15] 1976, Patent No. 2620896
[16] 1980, Patent No. 4220788
[17] 1980, Patent No. 615165
[18] 1979, Patent No. 2835846

← 1 2 →