trans-<2-(1',3'-dithian-2'-yl)cyclobutyl>diphenylphosphine oxide | 130866-00-1

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 英文名称: trans-<2-(1',3'-dithian-2'-yl)cyclobutyl>diphenylphosphine oxide
• 英文别名: trans-[2-(1',3'-dithian-2'-yl)cyclobutyl]diphenylphosphine oxide；2-[(1R,2R)-2-diphenylphosphorylcyclobutyl]-1,3-dithiane
• CAS: 130866-00-1；130997-89-6
• 化学式: C₂₀H₂₃OPS₂
• 分子量: 374.508
• InChiKey: JHJGPVUVTHUFHE-RTBURBONSA-N

物化性质

• 沸点：
  513.2±50.0 °C(predicted)
• 密度：
  1.25±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.9
• 重原子数：
  24
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  67.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  trans-<2-(1',3'-dithian-2'-yl)cyclobutyl>diphenylphosphine oxide 在 potassium permanganate 、 ammonium cerium(IV) nitrate 作用下， 以 水 、 丙酮 为溶剂， 生成 trans-(2-diphenylphosphinyl)cyclobutanecarboxylic acid
  参考文献：
  名称：

  手性膦基羧酸配体，反式-2-（二苯基膦基）环烷烃羧酸的首次合成。膦-钯配合物催化不对称烯丙基烷基化

  摘要：

  首次合成的手性膦基羧酸有效地用作配位体，用于钯催化的3-乙酰氧基-1,3-二苯基-1-丙烯和2-环己烯基乙酸酯的不对称烯丙基烷基化反应，由丙二酸二甲酯或膦酸三乙酯和氢化钠形成的软碳负离子。烷基化产物的ee最高可达83％。

  DOI：

  10.1016/s0040-4039(00)97502-6
• 作为产物：
  描述：

  在 sodium hydroxide 作用下， 以 甲醇 为溶剂， 反应 7.0h， 生成 trans-<2-(1',3'-dithian-2'-yl)cyclobutyl>diphenylphosphine oxide
  参考文献：
  名称：

  Synthesis of a novel type of chiral phosphinocarboxylic acids. The phosphine-palladium complexes catalyzed asymmetric allylic alkylation

  摘要：

  A novel type of chiral cycloalkylphosphines bearing the carboxy group at the beta-position were developed, and used for palladium catalyzed asymmetric alkylation of allylic substrates such as 2-cyclohexenylacetate and 1,3-disubstituted-propenyl acetates (R1CH = CHCH(OAc)R2: R1 = R2 = Ph; R1 = Ph, R2 = (CH2)4OAc; R1 = Ph, R2 = (CH2)6OAc; R1 = Ph, R2 = (CH2)10OAc). Reaction of the propenyl acetates with soft carbon nucleophiles such as triethyl sodiophosphonoacetate and sodiomalonic acid esters in the presence of a palladium catalyst prepared in situ from Pd(OAc)2 and chiral (2-diphenylphosphino)cycloalkanecarboxylic acids (7a,b) gave high yields of alkylation products (PhCH = CHCH(X)Ph: > 77 %ee for X = CH(CO2Et)P(O)(OEt)2 and > 72 %ee for X = CH(CO2Me)2). The alkylation products 15 and 28a-c were converted into optically active alpha-methylene-gamma-lactone and alpha-methylene macrolide derivatives. The high stereoselectivity demonstrated by the chiral phosphinocarboxylic acid-palladium catalyzed allylic alkylation suggested to be caused by an electronic repulsion between the carboxy group on the ligand and the incoming soft carbon nucleophile, which directs the nucleophilic attack on one of the pi-allyl carbons.

  DOI：

  10.1016/s0957-4166(00)86121-2