3,4-epoxy-3-methyl-2-butanol | 22520-35-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3,4-epoxy-3-methyl-2-butanol
• 英文别名: (1R)-1-[(2S)-2,3,3-trimethyloxiran-2-yl]ethanol
• CAS: 22520-35-0；24652-57-1
• 化学式: C₇H₁₄O₂
• 分子量: 130.187
• InChiKey: GWQYGFRJHHGOMU-VDTYLAMSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  9
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  32.8
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  3,4-二甲基-3-戊烯-2-酮 在 9-borabicyclo[3.3.1]nonane dimer 、 双氧水 、 C.I.酸性橙108 作用下， 反应 24.0h， 生成 3,4-epoxy-3-methyl-2-butanol
  参考文献：
  名称：

  Mokhtar, Hassan M.; Zaidlewicz, Marek, Polish Journal of Chemistry, 1981, vol. 55, # 4, p. 757 - 761

  摘要：

  DOI：

文献信息

• A Highly Chemoselective, Diastereoselective, and Regioselective Epoxidation of Chiral Allylic Alcohols with Hydrogen Peroxide, Catalyzed by Sandwich-Type Polyoxometalates:  Enhancement of Reactivity and Control of Selectivity by the Hydroxy Group through Metal−Alcoholate Bonding
  作者：Waldemar Adam、Paul L. Alsters、Ronny Neumann、Chantu R. Saha-Möller、Dorit Sloboda-Rozner、Rui Zhang

  DOI：10.1021/jo0266386

  日期：2003.3.1

  Sandwich-type polyoxometalates (POMs), namely [WZnM2(ZnW9O34)2]q- [M = Mn(II), Ru(III), Fe(III), Pd(II), Pt(II), Zn(II); q = 10-12], are shown to catalyze selectively the epoxidation of chiral allylic alcohols with 30% hydrogen peroxide under mild conditions (ca. 20 degrees C) in an aqueous/organic biphasic system. The transition metals M in the central ring of polyoxometalate do not affect the reactivity

  三明治型多金属氧酸盐（POM），即[WZnM2（ZnW9O34）2] q- [M = Mn（II），Ru（III），Fe（III），Pd（II），Pt（II），Zn（II） ; q = 10-12]，表明在温和条件下（约20摄氏度）在水/有机双相体系中，用30％过氧化氢选择性催化手性烯丙醇的环氧化。多金属氧酸盐中心环中的过渡金属M不影响过氧化氢使烯丙醇环氧化的反应性，化学选择性或立体选择性。对于空洞的Keggin POM [PW11O39] 7-，可以观察到相似的选择性，尽管产物收率明显降低，其中过氧钨酸盐络合物已被证明是活性氧化物质。所有这些特征都支持钨过氧配合物，而不是高价过渡金属氧物种作为三明治型POM催化环氧化的关键中间体。通过乙酰化或甲基化将羟基官能团封端时，这些POM未观察到这些羟基保护的底物[1a（Ac）和1a（Me）]的反应性。提出了一种模板来说明反应性和选择性的显着提高，
• Regio- and Diastereoselective Catalytic Epoxidation of Acyclic Allylic Alcohols with Methyltrioxorhenium:  A Mechanistic Comparison with Metal (Peroxy and Peroxo Complexes) and Nonmetal (Peracids and Dioxirane) Oxidants
  作者：Waldemar Adam、Catherine M. Mitchell、Chantu R. Saha-Möller

  DOI：10.1021/jo9902289

  日期：1999.5.1

  Geraniol and its 1-methyl derivative (regiochemical probes) and a set of methyl- and tert-butyl-substituted chiral allylic alcohols (stereochemical probes) have been used to elucidate the mechanism of the MTO-catalyzed epoxidation of allylic alcohols. The regiochemical probes are preferentially epoxidized at the unfunctionalized double bond by these MTO-based oxidants, which establishes that MTO/UHP

  香叶醇及其1-甲基衍生物（区域化学探针）和一组甲基和叔丁基取代的手性烯丙基醇（立体化学探针）已用于阐明MTO催化的烯丙基醇环氧化的机理。区域化学探针优先通过这些基于MTO的氧化剂在未官能化的双键上环氧化，从而确定MTO / UHP和MTO / H（2）O（2）/吡啶主要通过氢键起作用。与过渡金属氧化剂VO（acac）（2）/ t-BuOOH，Mo（CO）（6）/ t-BuOOH，MoO（2）[PhCON（Ph ）O]（2）/ t-BuOOH，MoO（O（2））[PhCON（Ph）O]（2）和H（2）WO（4）/ H（2）O（2）。对于立体化学探针，非对映选择性数据显示MTO催化系统（MTO / UHP和MTO / H（2）O（2）/吡啶）与过水合物型氧化剂Ti-beta / H（2）O（2）和过酸m-CPBA。通过1，3-烯丙基应变的构象控制导致高的苏非对映选择性，其中羟基官能度和and催
• Chemoselective C−H Oxidation of Alcohols to Carbonyl Compounds with Iodosobenzene Catalyzed by (Salen)chromium Complex
  作者：Waldemar Adam、Feyissa Gadissa Gelalcha、Chantu R. Saha-Möller、Veit R. Stegmann

  DOI：10.1021/jo9913457

  日期：2000.4.1

  secondary alcohols with benzylically and allylically activated C-H bonds are chemoselectively oxidized to the corresponding carbonyl compounds by the (salen)Cr(III) complex I as the catalyst and iodosobenzene as the oxygen source; the oxidizing species is the Cr(V) oxo complex. Allylic alcohols with fully substituted double bonds give appreciable amounts of epoxides besides the C-H oxidation products

  通过（salen）Cr（III）配合物I作为催化剂和碘代苯作为氧源，将具有苄基和烯丙基活化的CH键的伯醇和仲醇化学选择性氧化为相应的羰基化合物。氧化物质是Cr（V）氧配合物。具有完全取代的双键的烯丙醇除CH氧化产物烯酮外，还提供相当数量的环氧化物，而饱和醇则不易被氧化。
• Adam, Waldemar; Mitchell, Catherine M., Angewandte Chemie, 1996, vol. 108, # 5, p. 578 - 581
  作者：Adam, Waldemar、Mitchell, Catherine M.

  DOI：——

  日期：——
• Solvent Effects in the Regio- and Diastereoselective Epoxidations of Acyclic Allylic Alcohols by Dimethyldioxirane:  Hydrogen Bonding as Evidence for a Dipolar Transition State
  作者：Waldemar Adam、Alexander K. Smerz

  DOI：10.1021/jo951984r

  日期：1996.1.1

  A mechanistically significant solvent effect is observed in the regioselectivity of the geraniol epoxidation by dimethyldioxirane. In hydrogen-bonding solvents (MeOH), the 6,7-epoxide is preferred over the 2,3-epoxide (74:26), which reveals that the more nucleophilic 6,7 double bond (the 2,3 double bond is inductively deactivated by the allylic hydroxy group) is preferentially attacked by the electrophilic dimethyldioxirane. In MeOH, both regioisomeric dipolar transition states are equally well stabilized by interaction through intermolecular hydrogen bonding with solvent molecules. In the nonpolar CCl4, intramolecular hydrogen bonding with the allylic hydroxy functionality favors attack at the 2,3 double bond and proportionally more 2,3-epoxide is formed. Similarly, also the pi-facial selectivity in the dimethyldioxirane epoxidation of methyl-substituted chiral acyclic allylic alcohols is controlled by intermolecular versus intramolecular hydrogen bonding. Thus, higher three selectivities are obtained in the nonpolar CCl4 by stabilization of the diastereomeric transition state with minimal allylic strain through intramolecular hydrogen bonding with the allylic hydroxy group. The geometry of the dipolar transition state for the dimethyldioxirane epoxidations is similar to that of m-CPBA, but with apparently a slightly larger (ca. 130 degrees) dihedral angle alpha to relieve 1,2-allylic strain.