8-Allyloxy-6-(tert-butyl-diphenyl-silanyloxy)-1,4-bis-methoxymethoxy-3,7-dimethyl-naphthalene-2-carboxylic acid | 198124-74-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: 8-Allyloxy-6-(tert-butyl-diphenyl-silanyloxy)-1,4-bis-methoxymethoxy-3,7-dimethyl-naphthalene-2-carboxylic acid
• CAS: 198124-74-2
• 化学式: C₃₆H₄₂O₈Si
• 分子量: 630.81
• InChiKey: OZFDQBIXLPYQFF-UHFFFAOYSA-N

物化性质

• 沸点：
  694.2±55.0 °C(predicted)
• 密度：
  1.19±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6.62
• 重原子数：
  45.0
• 可旋转键数：
  14.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  92.68
• 氢给体数：
  1.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  8-Allyloxy-6-(tert-butyl-diphenyl-silanyloxy)-1,4-bis-methoxymethoxy-3,7-dimethyl-naphthalene-2-carboxylic acid 在 N-溴代丁二酰亚胺(NBS) 、 氢氟酸 、 三乙胺 、 三苯基膦 、 偶氮二甲酸二乙酯 作用下， 以 四氢呋喃 、 氯仿 、 乙腈 为溶剂， 生成 2-trimethylsilylethyl 5-bromo-6-hydroxy-1,4-bis(methoxymethoxy)-3,7-dimethyl-8-prop-2-enoxynaphthalene-2-carboxylate
  参考文献：
  名称：

  Total Synthesis of (+)-Damavaricin D

  摘要：

  DOI：

  10.1021/ja971828x
• 作为产物：
  描述：

  3-Bromo-5-hydroxy-7-methoxymethoxy-2,6-dimethyl-[1,4]naphthoquinone 在 咪唑 、 正丁基锂 、 sodium dithionite 、 Adogen 464(R) 、 对甲苯磺酸 、 silver(l) oxide 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 氯仿 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 45.83h， 生成 8-Allyloxy-6-(tert-butyl-diphenyl-silanyloxy)-1,4-bis-methoxymethoxy-3,7-dimethyl-naphthalene-2-carboxylic acid
  参考文献：
  名称：

  Synthesis of highly functionalized naphthoate precursors to damavaricin D — Observation of kinetically stable benzocyclohexadienones in the bromination reactions of highly functionalized β-naphthol derivatives

  摘要：

  Selective syntheses of the highly substituted bromonaphthoates 4a, 4b, 19, and 22 are reported. These compounds were targeted as precursors to the naphthoquinone nucleus of damavaricin D; compound 22 ultimately was used in the successful total synthesis. The synthesis of 22 features the Diels-Alder reaction of the oxygenated diene 5 and 2,6-dibromo-3-methylbenzoquinone 6 to establish the core naphthalenic unit. The quinone was protected throughout this synthesis as a 1,4-bis-methoxymethyl-1,4-dihydroquinone (see 36). The C-2-carboalkoxy group of 22 was added by carboxylation of the aryllithium intermediate generated from 36, and protected as a beta -trimethylsilylethyl ester. Finally, the C-8-Br substituent was introduced by NBS bromination of 38. This reaction proceeds by way of bromobenzocyclohexadienone 39. Related bromobenzo-cyclohexadienones 13 and 29 were observed in the NBS brominations of the highly functionalized beta -naphthyl MOM ethers 11 and 28. The bromobenzocyclohexadienones 29 and 39 undergo facile substitution reactions with chloride ion and reduction with bromide ion at rates competitive with base-promoted aromatization. The surprising kinetic stability of these intermediates is attributed to a combination of steric and stereoelectronic factors.

  DOI：

  10.1139/cjc-79-11-1711