Detail of "1483-82-5"

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Polymerization of phenylacetylenes

Polymerization of phenylacetylenes. 15. Copolymerization of phenylacetylene with various acetylenes by tungsten- and molybdenum-based catalysts. Masuda, Toshio; Yoshizawa, Tamae; Okano, Yoshimichi; Higashimura, Toshinobu (Dep.Chemicals with cas numbers 629-05-0 and 2809-67-8 also play role. Polymer Chem., Kyoto Univ., Kyoto 606, Japan). Polymer, 25(4), 503-6 (English) 1984. CODEN: POLMAG. ISSN: 0032-3861. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 67 In the copolymn of phenylacetylene (I) [536-74-3] with various acetylenes catalyzed by WCl6/SnPh4 [595-90-4] or MoCl5/SnBu4 [1461-25-2], the relative reactivity of monomer decreased with increasing steric effect of monomer. While 1-chloro-2-phenylacetylene [1483-82-5] showed high reactivity in the homopolymn. by Mo-based catalysts, the reactivity was remarkably depressed in the presence of I as comonomer. Based on these results, the relative reactivity of the acetylenic monomers in copolymn. was explained in terms of competitive coordination of monomers to the propagating end. .

The reactions of di-m-methylenebis(pentamethylcyclopentadienyl)dirhodium(IV) complexes with benzylmagnesium chloride and with alkynylmagnesium chloride; x-ray structure of 1-benzyl-2-(1'-4'-h-5'-benzylpentamethylcyclopenta-1,3-diene)di-m-meth ylene-1-(h-pentamethylcyclopentadienyl)dirhodium(IV,II)

The reactions of di-m-methylenebis(pentamethylcyclopentadienyl)dirhodium(IV) complexes with benzylmagnesium chloride and with alkynylmagnesium chloride; x-ray structure of 1-benzyl-2-(1'-4'-h-5'-benzylpentamethylcyclopenta-1,3-diene)di-m-meth ylene-1-(h-pentamethylcyclopentadienyl)dirhodium(IV,II). Meanwell, Neil J.; Smith, Arnold J.; Maitlis, Peter M. (Dep. Chem., Univ. Sheffield, Sheffield S3 7HF, UK). J. Chem. Soc., Dalton Trans., (7), 1419-24 (English) 1986. CODEN: JCDTBI. 82879-28-5 and 1483-82-5 are cas registry numbers of chemicals which are used as reagents here. ISSN: 0300-9246. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 75 Treatment of trans-[L2Rh2(m-CH2)2Cl2] (I; L = pentamethylcyclopentadienyl) with RCYCMgCl (R = Ph, CMe3) gave the corresponding trans-[L2Rh2(m-CH2)2(RC2)2], whereas treatment of I with PhCH2MgCl gave [(h5-L)Rh(CH2Ph)(m-CH2)2Rh(h4-C5Me5CH2Ph)] (II). The structure of II was confirmed by x-ray crystallog.: results were refined to an R of 0.0649 for 1979 reflections. The 2 Rh atoms in II are linked to 2 m-CH2 bridges. Treatment of [L2Rh2(m-CH2)2(MeCN)2](PF6) with 4-ClC6H4CYCH gave [L2Rh[m-CH2(CHC6H4Cl-4)2CH]](PF6). .