catalyst: tetra-n-butylammonium bromide in neat (no solvent) a mixt. of Bu2SnCl2, CH2Br2, and 5 molpercent of Bu4NBr was heated gradually to 200°C over a period of 15 h; purifn. was accomplished by vac. distn. through a short path apparatus;
参考文献
Journal of Organometallic Chemistry, , vol. 228, # 3 p. 217 - 222
in chloroform-d1 byproducts: AsBrCH2SCHCH; (Ar or N2); addn. of excess AsBr3 to soln. of SnBu2CH2S(CH)2 in CDCl3 at 25°C; heating at 80°C for 7 h; not isolated;
参考文献
Journal of the American Chemical Society, , vol. 122, # 29 p. 7012 - 7016
sodium bromide or potassium bromide in acetone Bu2SnCl2 was heated in acetone with NaBr or KBr;
参考文献
Journal of Organometallic Chemistry, , vol. 224, # 3 p. 223 - 236
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反应条件
bromine in tetrachloromethane (ratio Sn-compd./Br2 1/1, in the dark, 24 h, room temp.); not isolated; NMR monitoring; ratio of erythro/threo-compd. 32/68;
参考文献
Journal of Organometallic Chemistry, , vol. 376, p. 283 - 296
