CAS: 3234-02-4; 2,3-Dibromo-2-Butene-1,4-Diol

相似化合物

488-11-9 21285-46-1 116631-94-8

上下游产品

CAS号110-65-6 2-丁炔-1,4-二醇 | CAS号32460-02-9 3,4-二溴呋喃

丁炔二醇置于四丁基溴化铵,双氧水,Vanadia体系中,用 水,乙腈 作为反应溶剂,化学反应 1.5H,以46%的收率获得产物2,3-二溴-1,4-丁烯二醇
参考文献:V2O5-H2O2促进的四丁基溴化铵对有机底物的区域选择性溴化:对环境有利的合成方案
标题:V2O5-H2O2促进的四丁基溴化铵对有机底物的区域选择性溴化:对环境有利的合成方案
摘要:[反应:见正文]在过氧化氢的存在下,五氧化二钒非常有效地促进了四丁基溴化铵对有机底物的溴化作用,包括对某些芳族化合物的选择性溴化作用;温和的条件,高的选择性,收率和反应速率,以及溴和氢溴酸的冗余是合成方案的一些主要优点.
DOI:10.1021/ol9902935

专利信息

专利号:US-11634541-B2
优先权日:2017-08-18
标 题:Catalyst for synthesizing polyethylene oxide polymer and synthesis method thereof
发明人：LIANG GUOQIANG
权利人:JIAHUA CHEMICALS MAOMING CO LTD
摘要:Provided is a catalyst for synthesizing a polyethylene oxide polymer, comprising a crown ether as a first component, a quaternary phosphonium salt as a second component, and an alkali metal and/or an alkali metal compound as a third component. The catalyst can reduce the concentration of alkali metal ions in the product and is suitable for high-standard industrial fields. Also provided is a method for synthesizing a polyethylene oxide polymer, comprising carrying out a reaction of a compound containing active hydrogen and ethylene oxide in the presence of the catalyst. The method is simple to operate and environmentally friendly, improves the quality of the synthesized product, and is suitable for high-standard industrial production.

专利号:US-8653223-B2
优先权日:2008-04-16
标题:Transketalized compositions, synthesis, and applications
发明人：SELIFONOV SERGEY; GOETZ ADAM EDWARD; JING FENG
权利人:SELIFONOV SERGEY; GOETZ ADAM EDWARD; JING FENG; SEGETIS INC
摘要:Ketal compounds of the structure I n nand a method of preparation of the compound from polyols and oxocarboxylates, as well as uses thereof.

专利号:US-8546519-B2
优先权日:2007-10-09
标题 :Polyketal compounds, synthesis, and applications
发明人：SELIFONOV SERGEY; ROTHSTEIN SCOTT D; WICKS DOUGLAS A; MULLEN BRIAN D; MULLEN TARA J; PRATT JASON D; WILLIAMS CHARLES T; WU CHUNYONG; ZHOU NING
权利人:SELIFONOV SERGEY; ROTHSTEIN SCOTT D; WICKS DOUGLAS A; MULLEN BRIAN D; MULLEN TARA J; PRATT JASON D; WILLIAMS CHARLES T; WU CHUNYONG; ZHOU NING; SEGETIS INC
摘要:The invention relates to polyketal compounds. The compounds are synthesized by the selective ketalization of oxocarboxylic acids, e.g. keto acids and semialdehydes, and esters thereof with tetrols and higher polyols that products two or more cyclic ketal ester moieties per molecule, wherein the cyclic ketal moieties are situated in a bis-, tris-, or polyketal conformation. The invention further relates to applications of these compounds and subsequent reactions thereof.

专利号:WO-2019067883-A1
优先权日:2017-09-28
标题 :SYNTHESIS AND PREPARATION OF 2,3-DIBROMO-2-PROPEN-1-OL