Detail of "6995-79-5"

Reference

Cyclic phosphorylation reaction of diols with tris(1-imidazolyl)phosphine

Cyclic phosphorylation reaction of diols with tris(1-imidazolyl)phosphine. Shimidzu, Takeo; Yamana, Kazushige; Kanda, Naoya; Kitagawa, Susumu (Div. Mol. Eng., Kyoto Univ., Kyoto 606, Japan). Bull. Chem. Soc. Jpn., 56(11), 3483-5 (English) 1983. CODEN: BCSJA8. ISSN: 0009-2673. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 33 Tris-1-imidazolyl)phosphine (I) gave a cyclic phosphite, e.g., II, quant. in reactions with diols possessing favorably placed OH groups in which the distance between the two O atoms is 2.7-3.0 ?. Both five- and six-membered cyclic phosphites were obtained. The course of the selective formation of ribonucleoside 2',3'-cyclic 1-imidazolylphosphonite was detd. 50-89-5 and 6995-79-5 are just another two chemicals used in this study. by the higher reactivity of I toward the 2'- or 3'-hydroxy group than toward the 5'-hydroxyl group of ribonucleoside. .

Liquid-crystalline cyclohexylene unit-containing polycarbonates

Liquid-crystalline cyclohexylene unit-containing polycarbonates. Sugimori, Shigeru; Kondo, Tomoyuki (Chisso Corp., Japan). Jpn. Kokai Tokkyo Koho JP 03273025 A2 4 Dec 1991 Heisei, 4 pp. (Japan). CODEN: JKXXAF. CLASS: ICM: C08G064-00. APPLICATION: JP 90-72689 22 Mar 1990. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 75 The title polymers with low birefringence and excellent transparency are prepd. Thus, polymn. of trans,trans-4,4'-bicyclohexanediol with ClCO2CCl3 in 1,2-dichloroethane in the presence of pyridine under reflux gave 76.1% liq.There are some commonly used reagents with their cas registry numbers 6995-79-5 and 139500-29-1 in this article.-cryst. polymer I with glass transition temp. 146°. .