220141-72-0Fc1cc(CBr)cc(F)c1FMPEKZIYOLQCWLL-UHFFFAOYSA-N220141-72-0DTXSID40380358安全信息仅供参考,不能替代供应商安全技术说明书(SDS)、适用法规与专业评估。
Danger
H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 47 reports by companies from 6 notifications to the ECHA C&L Inventory.;Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
用途3,4,5-三氟溴苄是一种有机中间体。
制备3,4,5-三氟溴苄可由3,4,5-三氟苯甲醛为原料先制备(3,4,5-三氟苯基)甲醇,然后溴代得到3,4,5-三氟溴苄。步骤A:(3,4,5-三氟苯基)甲醇:向冷却的(-5℃)3,4,5-三氟苯甲醛(7.0g,43.75mmol)在THF和水的混合物(50ml,9∶1)中的溶液中,在30min内分批地缓慢加入NaBH4(1.662g,43.75mmol)。在2h的时间内使此反应混合物达到室温,并小心地将其倒入冰冷的稀HCl(200ml,1N)中。将油层萃取入CH2Cl2(250ml)中,有机层经水(200ml)洗涤,干燥(MgSO4),并蒸发。所得粗产物(7.08g,定量)未经进一步纯化继续使用。步骤B:3,4,5-三氟溴苄:向(3,4,5-三氟苯基)甲醇(40mmol)在CH2Cl2(150ml)中的溶液中缓慢地加入亚硫酰溴(6.16ml,80mmol)在CH2Cl2(50ml)中的溶液。在室温下,搅拌此反应混合物16h,并将其倒入冰水(200ml)中。将有机层分离出来,用饱和的NaHCO3(2×200ml)、水(200ml)洗涤,干燥(MgSO4),并蒸发以定量的收率得到相应的浅黄色油状溴代化合物。
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