36451-09-9Relevant articles and documents
Single Pot Process For The Preparation Of Diazonaphthoquinonesulfonyl Ester
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Page/Page column 2; 4, (2008/06/13)
The present invention provides a single pot process for the preparation of diazonaphthoquinonesulfonyl ester, a useful organic material for micro electronic and dye industry. This study pertains to the one pot preparation of diazonaphthoquinonesulfonyl esters using the corresponding diazonaphthoquinine sulfonic acid or its sodium salt, diphosgene or triphosgene, variety of hydroxy compounds and tertiary organic base in an organic solvent medium.
A process for the preparation of diazonaphthoquinonesulfonylchlorides using diphosgene and triphosgene
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Page/Page column 4-5, (2008/06/13)
The invention relates to a a process for the preparation of diazonaphthoquinonesulfonylchlorides using diphosgene and triphosgene of the formula 1a, 1b, 1c using diphosgene or triphosgene.
Sulfochlorination of 1,2-Naphthoquinone-(2)-diazide by Chlorosulfonic acid
Sauer, E.,Polz, K.,Schopf, G.,Bendig, J.
, p. 467 - 473 (2007/10/02)
The sulfochlorination of 1,2-naphthoquinone diazide-(2) (1) by chlorosulfonic acid was investigated.The yields of the formed products (1,2-naphthoquinone diazide-(2)-4-sulfonic acid (4), 1,2-naphthoquinone diazide-(2)-5-sulfonic acid (5), 1,2-naphthoquinone diazide-(2)-4-sulfochloride (2) and 1,2-naphthoquinone diazide-(2)-5-sulfochloride (3)) depend on the temperature and on the time of reaction.The highest yields of the favoured 1,2-naphthoquinone diazide-(2)-4-sulfochloride (2) are obtained at 63 deg C and after a reaction time of 80 minutes (50percent).