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作 者:谢可[1] 张瑞宁[1] 易莉莉[1] 苟蓉[1] 黄念红 陈明军[1] 钟柳[1] 刘治国[1]
出 处:《广州化工》2017年第10期39-42,共4页GuangZhou Chemical Industry
基 金:成都明方高新技术材料有限公司资助西华大学横向课题(NO:16233063)
摘 要:(R)-甘油醛缩丙酮是重要的生物活性物质的重要中间体或前体,针对其易自聚和氧化反应的缺点,研究解决其储存问题具有实际意义。以D-甘露醇为原料和2,2-二甲氧基丙烷(DMP)作缩合剂,在氯化亚锡催化下得到1,2:5,6-二氧-异亚丙基-D-甘露醇,然后用NaIO_4氧化断链合成(R)-甘油醛缩丙酮粗品,不经分离直接与焦亚硫酸钠反应合成了[(4R)-2,2-二甲基-1,3-二氧环戊烷-4-基]羟基甲磺酸钠(缩写为羟基磺酸钠),并研究了羟基磺酸钠与Wittig试剂Ph_3P=C(CH_3)COOEt的反应性,当羟基磺酸钠与Ph_3P=(CH_3)COOEt摩尔比为1∶1.2,于DCM中Wittig反应产物收率为41.1%,采用FTIR、~1H NMR和^(13)C NMR表征了目标化合物的结构。(R)-glyceraldehyde acetonide is the key intermediate or precursor of the bioactive compounds. It is verypractical significance to solve the storage problem of (R)-glyceraldehyde acetonide because of its self-condensation andoxidation. Therefore, 1,2:5,6 - di- O- isopropylidene- D- mannitol was synthesized using D- mannitol as raw material,2,2-dimethoxy-propane condensation agent and stannous chloride catalyzer. The synthetic product was oxidized by NalO4to yield the .crude of R) -glyeeraldehyde aeetonide. Sodium ((4R) -2,2-dimethyl = 1,3 -dioxolan-4-yl) (hydroxyl)methanesulfonate (abbreviated as sodium hydroxysulfonate) was synthesized from the crude with sodium pyrosulfite. Thereactivity of sodium hydroxysulfonate instead of (R)-glyceraldehyde acetonide with the Wittig reagent Ph3 P = C (CH3 )COOEt was studied. The yield of the Wittig product was 41.1% under the optimum reaction conditions as follows:n( sodium hydroxysulformte) : n( Ph3P = C (CH3 )COOEt)= 1 : 1.2 with the solvent of DCM at 0 ℃ for overnight. Thestructure was confirmed by FTIR, 1H NMR and 13C NMR.
关 键 词:(R)-甘油醛缩丙酮 [(4R)-2 2-二甲基-1 3-二氧环戊烷-4-基]羟基甲磺酸钠 WITTIG反应
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