Detail of "920-36-5"

Reference

A new synthesis of ar-todomatuic acid and its methyl ester (ar-Juvabione)

A new synthesis of ar-todomatuic acid and its methyl ester (ar-Juvabione). Kavitake, B. P.; Desai, U. 17882-18-7 and 920-36-5 are also occured in this study. V.; Desai, D. G.; Mane, R. B. (Dep. Chem., Shivaji Univ., Kolhapur 416 004, India). Indian J. Chem., Sect. B, 25B(2), 178-9 (English) 1986. CODEN: IJSBDB. ISSN: 0376-4699. DOCUMENT TYPE: Journal CA Section: 30 (Terpenes and Terpenoids) Reaction of isobutyllithium with 3-phenylbutyric acid gave 2-phenyl-6-methylheptan-4-one, which on reaction with oxalyl chloride under Friedel-Crafts conditions furnishes ar-todomatuic acid (I, R = H). Work-up of the above reaction with dry methanol instead of water gives ar-juvabione (I, R = Me). .

Selective polymerization of butadiene in C4 fractions

Selective polymerization of butadiene in C4 fractions. Griehl, Volker; Anton, Elisabeth (VEB Chemische Werke Buna, Ger. Dem. Rep.). Ger. (East) DD 237670 A1 23 Jul 1986, 4 pp. (German Democratic Republic) CODEN: GEXXA8. CLASS: ICM: C08F036-06. ICS: C08F004-48. APPLICATION: DD 82-245284 29 Nov 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 39, 67 The title process, useful in the prepn. of telechelic star polymers, uses as initiators polyfunctional reaction products of tech. divinylbenzene (I) with Li alkyls in vinyl group-Li mol ratio 1.1-2:1. Adding 200 g C4 fraction contg. 37.5% butadiene over 2 h to 125 mL C6H6 soln. of initiator [prepd. from 40 mmol sec-BuLi and tech. I (74 mmol vinyl groups)] at 323 K and adding 1.95 g ethylene oxide gave 100% liq., OH-terminated polybutadiene with mol. wt. 8250, OH functionality 4.4, and microstructure 1,4- 62, vinyl 32, and vinylarom. 1321-74-0 and 920-36-5 are just another two chemicals used in this study. 6(mol)%. .