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wbylovelife(½ð±Ò+10): лл³æ³æ 2011-09-20 09:54:45
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ÉÙдÁ˸öO£¬ Purification of Laboratory ChemicalsÀïÃæÓÐ 4-Vinylbenzyl chloride (4-chloromethylstyrene) [1592-20-7] M 152.6, b 58-62o/ 0 . 4mm, 75.5-79o/2mm, 229o/760mm, d25 1.083, n D 20 1.572. Purify 4-vinylbenzyl chloride by dissolving it in Et2O, washing it with 0.5% of aqueous NaOH, separating, drying the organic layer (Na2SO4), evaporating and distilling the residual oil under N2 in vacuo. Add 0.05% of 4-tert-butylcatechol as stabilizer. It is lachrymatory. [Nishikubo et al. Tetrahedron Lett 22 3872 1981, Tanimoto et al. Synth Commun 4 193 1974, Beilstein 6 IV 3818.] |
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