Detail of "75-35-4"

Reference

Pretreatment of activated carbon as a dehydrochlorination catalyst for a chlorohydrocarbon

Pretreatment of activated carbon as a dehydrochlorination catalyst for a chlorohydrocarbon. (Toyo Soda Mfg. Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59004442 A2 11 Jan 1984 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: B01J021-18; C01B031-00. ICA: C07C017-34; C07C021-08; C07C021-21. APPLICATION: JP 82-112571 1 Jul 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 45, 67 Activated C is loaded with hydroquinone [123-31-9] or p-tert-butylpyrocatechol (I) [98-29-3] as free-radical acceptor, and perhaps further with catalyst, and used for dehydrochlorination of C2-4 chlorohydrocarbons to produce chloroolefins in high yield. Thus, 20 g com. 4-6 mesh activated C (mineral origin) was refluxed for 5 h in 200 mL 012M I in EtOH, for 1 h, then in 300 mL EtOH, filtered, washed with 300 mL EtOH, and vacuum-dried (or refluxed for 10 h in 100 mL 0.5M I in EtOH, filtered, washed, vacuum-dried, stirred hot in a 1:1 mol mixt. of CsCl and dibenzo-24-crown-8 [14174-09-5] in MeOH, distd., and dried. Finally, the C is loaded with 20% of the Cs complex. Then, N contg. 10 vol.% CHCl2CH2Cl (II) [79-00-5] 230 mL/min was passed over the catalyst in a 20-mm-diam. tube at 250° and space velocity 720 or 760 h-1. II conversion was 2.9% and selectivities of CH2:CHCl [75-01-4], CH2:CCl2 [75-35-4], and trans- [156-60-5] and cis-CHCl:CHCl [156-59-2] were 3.1, 67.2, 17.3, and 12.4% (or 16.1% conversion, and 1.1, 76.0, 15.9, and 7.0% selectivity), compared with 7.There are some commonly used reagents with their cas registry numbers 14174-09-5 and 7440-44-0 in this article.6% conversion and 13.2, 42.3, 28.7, and 15.8% selectivity (or 10.6% conversion and 13.8, 49.4, 23.8, and 13.0% selectivity) without I loading. .

Vinylidene chloride

Vinylidene chloride. (Toyo Soda Mfg. Co., Ltd.In this study， 7647-17-8 and 917-23-7 are also used., Japan). Jpn. Kokai Tokkyo Koho JP 58172329 A2 11 Oct 1983 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C021-08; C07C017-34. ICA: B01J031-18. APPLICATION: JP 82-52376 1 Apr 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 23 Vinylidene chloride (I) [75-35-4] is prepd. by dehydrochlorination of 1,1,2-trichloroethane (II) [79-00-5] in the presence of porphine derivs. with or without alkali metal compds. Thus, a (vol.) mixt. of II and N was passed through a catalyst layer (10 parts 1:1 M mixt. of tetraphenylporphine [917-23-7] and CsCl supported by 90 parts colloidal silica) at 300° and 500 h-1 to convert 12.0% II to I 86.5, trans-1,2-dichloroethylene 6.7, and cis-1,2-dichloroethylene 6.8 mol. %. .