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mingy: 金币+100, 翻译EPI+1, ★★★很有帮助 2013-12-14 17:43:42
mingy: 金币+100, 翻译EPI+1, ★★★很有帮助 2013-12-14 17:43:42
| A solution of 1.88 g (5.2 mmol) of 8b in 15 ml of benzene was stirred at room temp. treated with 1.20 g (8.7 mmol) of PCl3 and stirred for 1 h. All the volatile constituents were removed under the vaccum and the pale yellow residue was dissolved in benzene / dichloromethane (1: 1) .Pentane was added to the clear solution until the commencement of crystallization. Yield. 1.85 g (91%). |
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