Reference

Carbon radicals

Carbon radicals. Hartmann, Manfred; Kreisel, Guenther; Seidel, Wolfgang; Moszner, Norbert; Kirmse, Reinhard (Ger. Dem. Rep. ). Ger. (East) DD 204083 A1 16 Nov 1983,7 pp. (German). (German Democratic Republic). CODEN: GEXXA8. CLASS: IC: C07B029-04. APPLICATION: DD 82-237844 3 Mar 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) C radicals useful in polymn.Several substances with their cas registry numbers 75-65-0 and 59774-49-1 may be metioned in this study. are generated by the reaction of s-complexes of Group IV-VI metals bearing sterically hindered, carbanion ligands free of b-H with secondary or tertiary alcs. or carbonyl compds. Thus, adding 10 mmol Ph3COH [76-84-6] slowly to 10 mmol (2,4,6-Me3C6H2)3V (I) [59774-49-1] in THF stirred at 300 K, stirring 1 h, and adding Et2O gave 2.2 g Ph3CCPh3 [17854-07-8]. Adding 0.25 mmol I to a frozen soln. of 100 mmol Me methacrylate in 40 mL PhMe and stirring 30 min at 253 K gave 4.8 g polymer [9011-14-7], d.p. 1920. .

1-(Triphenylmethyl)imidazoles

1-(Triphenylmethyl)imidazoles. (Kyowa Hakko Kogyo Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58170766 A2 7 Oct 1983 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF.There are some reagents with their cas registry numbers 76-84-6 and 23593-75-1 are used in this study. CLASS: IC: C07D233-62. APPLICATION: JP 82-53244 31 Mar 1982. DOCUMENT TYPE: Patent CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) 1-(Triphenylmethyl)imidazoles were prepd. by treating triphenylmethanols with imidazole (I) in the presence of ClSO3H (II) or FSO3H. Thus, reaction of 6.81 g I with 5.21 g Ph3COH and in CH2Cl2 contg. 2.8 g II at room temp. for 15 min gave 75.1% 1-(triphenylmethyl)imidazole. Also, prepd. was 1-[(o-chlorophenyl)diphenylmethyl]imidazole. .