SU1004365A1 - Process for producing naphthalenethioles - Google Patents
Process for producing naphthalenethioles Download PDFInfo
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- SU1004365A1 SU1004365A1 SU813342424A SU3342424A SU1004365A1 SU 1004365 A1 SU1004365 A1 SU 1004365A1 SU 813342424 A SU813342424 A SU 813342424A SU 3342424 A SU3342424 A SU 3342424A SU 1004365 A1 SU1004365 A1 SU 1004365A1
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Description
(Sk) СПОСОБ ПОЛУЧЕНИЯ НАФТАЛИНТИОЛОВ(Sk) METHOD FOR PRODUCING NAPHTHALINTHIOLS
1. one.
Изобретение относитс к усовер- шенствованному способу получени нафталинтиолое формулы IThis invention relates to an improved process for the preparation of naphthalene thiol of formula I
RR
(I)(I)
Где R - водород или хлор, которые наход т применение в производстве тиоиндигоидных красите- Q лей.Where R is hydrogen or chlorine, which are used in the manufacture of thioindigoid dyes Q.
Известен способ получени 2-нафталинтиола , взаимодействием хлорбензольного раствора 2-нафталинсульфохлорида и 20-25 -ного раствора сер-15 ной кислоты с цинковой пылью при 7075 С и последующим нагреванием при 9S 100°C. Выход целевого продукта 92% 1.A known method for the preparation of 2-naphthalentiol, the interaction of a chlorobenzene solution of 2-naphthalenesulfonyl chloride and a 20-25 solution of sulfuric acid with zinc dust at 7075 ° C and subsequent heating at 9 ° C is 100 ° C. The yield of the target product is 92% 1.
Известен способ получени 1-хлор- 20 -8-нафталинтиола, заключающийс во взаимодействии смеси бО-б5 -ной серной кислоты и хлорбензольной суспензий 1-хлор-8-нафталинсульфохлоридаA method of producing 1-chloro-20 -8-naphthalentiol is known, which consists in the interaction of a mixture of sulfuric acid BS-5 and chlorobenzene suspensions of 1-chloro-8-naphthalenesulfonyl chloride
с цинком при 90-96С и последующем нагревании. Выход целевого продукта 73,5Х 2.with zinc at 90-96C and subsequent heating. The yield of the target product 73,5X 2.
Недостатком указанных способов где используетс обработка смеси .сульфохлорида с минеральной кислотой и цинком, вл етс трудность регулировани температуры при подаче цинка , что сказываетс на стабильности выхода целевого продукта.The disadvantage of these methods, where the treatment of a mixture of sulfochloride with mineral acid and zinc is used, is the difficulty of controlling the temperature when feeding zinc, which affects the stability of the yield of the target product.
Наиболее близким к предлагаемому вл етс способ получени одного из прерставителей нафталинтиолоа формуг. лы 1), в частности 2-нафталинтиола, заключающийс в том, что 2-нафталин- сульфохлорид подвергают взаимодействию с цинком, смесь выдерживают приClosest to the present invention is a method for preparing one of the naphthalenethiol formulas. 1), in particular 2-naphthalentiol, which consists in that 2-naphthalene sulfonyl chloride is reacted with zinc, the mixture is kept at
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813342424A SU1004365A1 (en) | 1981-07-16 | 1981-07-16 | Process for producing naphthalenethioles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU813342424A SU1004365A1 (en) | 1981-07-16 | 1981-07-16 | Process for producing naphthalenethioles |
Publications (1)
Publication Number | Publication Date |
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SU1004365A1 true SU1004365A1 (en) | 1983-03-15 |
Family
ID=20978399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU813342424A SU1004365A1 (en) | 1981-07-16 | 1981-07-16 | Process for producing naphthalenethioles |
Country Status (1)
Country | Link |
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SU (1) | SU1004365A1 (en) |
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1981
- 1981-07-16 SU SU813342424A patent/SU1004365A1/en active
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