Reference

Reactions on Ziegler-Natta catalysts

Reactions on Ziegler-Natta catalysts. 15. Introduction of halogenated aralkyl groups into 1,4-polybutadiene and metathesis degradation of the modified polymers. Demel, Hans; Hummel, Klaus (Inst. Org. Chem. Org.-Chem. Technol., Tech. Univ. Graz, Graz, Austria). Makromol. Chem., 178(6), 1699-706 (German) 1977. CODEN: MACEAK. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) 1,4-Polybutadiene [9003-17-2] was aralkylated with p-MeC6H4F [352-32-9], o- [95-49-8], m- [108-41-8], and p-MeC6H4Cl [106-43-4], p-BrC6H4Me [106-38-7], 2-chloro-p-xylene [95-72-7], and 2,4- [95-73-8] and 3,4-dichlorotoluene [95-75-0] in the presence of dicumyl peroxide [80-43-3]. The IR spectra of the products were detd., and the polymers were metathesized by 4-octene [592-99-4] and the products identified by gas chromatog.-mass spectroscopy. Aralkylation was accompanied by methylation.

Halobenzoic acids

Halobenzoic acids. Artamkina, G. A.; Grinfel'd, A. A.; Beletskaya, I. P. (Moscow State University, USSR). U.S.S.R. SU 1066982 A1 15 Jan 1984 From: Otkrytiya, Izobret., Prom. Obraztsy, Tovarnye Znaki 1984, (2), 92. (Russian). (Union of Soviet Socialist Republics). CODEN: URXXAF. CLASS: IC: C07C051-265; C07C063-70. APPLICATION: SU 82-3469246 14 Jul 1982.Several substances with their cas registry numbers 106-38-7 and 535-80-8 may be metioned in this study. DOCUMENT TYPE: Patent CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) 3,4-XYC6H3CO2H (X = F, Cl, Br, Y = H; or Y = Cl, Br, X = H) are prepd. by liq.-phase oxidn. of the corresponding 3,4-XYC6H3Me (I) with O or air in an org. solvent contg. a catalyst with heating. The process is simplified and its selectivity increased by using MeOCH2CH2OMe (II) as the org. solvent and 18-crown-6 (III) as the catalyst in the presence of KOH in 1:0.05-0..2-21.6:19.2-38.4 I-II-KOH-III molar ratio at 50-70°. .