N-(2-bromoprop-2-enyl)-N-[(2S,3S,6S)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-6-ethoxy-3,6-dihydro-2H-pyran-3-yl]-4-methylbenzenesulfonamide | 187990-47-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: N-(2-bromoprop-2-enyl)-N-[(2S,3S,6S)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-6-ethoxy-3,6-dihydro-2H-pyran-3-yl]-4-methylbenzenesulfonamide
• CAS: 187990-47-2
• 化学式: C₂₄H₃₈BrNO₅SSi
• 分子量: 560.625
• InChiKey: KPVPRRPCTOPCKL-ZRBLBEILSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.6
• 重原子数：
  33
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.58
• 拓扑面积：
  73.4
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  N-(2-bromoprop-2-enyl)-N-[(2S,3S,6S)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-6-ethoxy-3,6-dihydro-2H-pyran-3-yl]-4-methylbenzenesulfonamide 在 palladium diacetate 、 四丁基硫酸氢铵 、 三乙胺 、 三苯基膦 作用下， 以 水 、 乙腈 为溶剂， 反应 24.0h， 以81%的产率得到[(3aR,7S,7aS)-3-methylidene-1-(4-methylphenyl)sulfonyl-2,3a,7,7a-tetrahydropyrano[3,4-b]pyrrol-7-yl]methoxy-tert-butyl-dimethylsilane
  参考文献：
  名称：

  Palladium-Mediated Cyclization on Carbohydrate Templates. 1. Synthesis of Enantiopure Bicyclic Compounds

  摘要：

  The bromo unsaturated carbohydrates 30 and 9 were prepared from ethyl 4,6-di-O-acetyl-2,3-dideoxy-D-erythro-hex-2-enopyranoside (1a) and (7) by deacetylation followed by monosilylation with TBDMSCl and then alkylation with BrCH2CBr=CH2. The three analogues 6 and 10 were obtained using the same methodology after inversion at C-4 via a Mitsunobu reaction. The N- and C-analogues 4b and 5 were prepared by palladium alkylation of the carbonate 2d with TsNHCH(2)CBr=CH2 and (CO(2)Me)(2)CHCH2CBr=CH2, respectively. Treatment of the unsaturated carbohydrates 3a and 9 with a catalytic amount of Pd(OAc)(2)/PPh(3) in CH3CN/H2O in the presence of Bu(4)NHSO(4) and NEt(3) afforded the bicyclic compound 14a. The N- and C-analogues 14b and 14c were obtained using the same conditions and starting, respectively, from 4b and 5. On the other hand, treatment of the three derivatives 6 and 10 under these conditions gave the furanic structure 15. In the case of compound 30, performing the reaction in the presence of sodium formate yielded the bicyclic 2-deoxy carbohydrate 17.

  DOI：

  10.1021/jo961881o
• 作为产物：
  描述：

  ethyl 6-O-tert-butyldimethylsilyl-4-hydroxyl-2,3-dideoxy-α-D-erythro-hex-2-enopyranoside 在 4-二甲氨基吡啶 、 tris(dibenzylideneacetone)dipalladium (0) 、 1,4-双(二苯基膦)丁烷 作用下， 以 四氢呋喃 、 吡啶 为溶剂， 反应 48.0h， 生成 N-(2-bromoprop-2-enyl)-N-[(2S,3S,6S)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-6-ethoxy-3,6-dihydro-2H-pyran-3-yl]-4-methylbenzenesulfonamide
  参考文献：
  名称：

  Palladium-Mediated Cyclization on Carbohydrate Templates. 1. Synthesis of Enantiopure Bicyclic Compounds

  摘要：

  The bromo unsaturated carbohydrates 30 and 9 were prepared from ethyl 4,6-di-O-acetyl-2,3-dideoxy-D-erythro-hex-2-enopyranoside (1a) and (7) by deacetylation followed by monosilylation with TBDMSCl and then alkylation with BrCH2CBr=CH2. The three analogues 6 and 10 were obtained using the same methodology after inversion at C-4 via a Mitsunobu reaction. The N- and C-analogues 4b and 5 were prepared by palladium alkylation of the carbonate 2d with TsNHCH(2)CBr=CH2 and (CO(2)Me)(2)CHCH2CBr=CH2, respectively. Treatment of the unsaturated carbohydrates 3a and 9 with a catalytic amount of Pd(OAc)(2)/PPh(3) in CH3CN/H2O in the presence of Bu(4)NHSO(4) and NEt(3) afforded the bicyclic compound 14a. The N- and C-analogues 14b and 14c were obtained using the same conditions and starting, respectively, from 4b and 5. On the other hand, treatment of the three derivatives 6 and 10 under these conditions gave the furanic structure 15. In the case of compound 30, performing the reaction in the presence of sodium formate yielded the bicyclic 2-deoxy carbohydrate 17.

  DOI：

  10.1021/jo961881o

文献信息

• Palladium-Mediated Cyclization on Carbohydrate Templates. 1. Synthesis of Enantiopure Bicyclic Compounds
  作者：Jean-Flaubert Nguefack、Véronique Bolitt、Denis Sinou

  DOI：10.1021/jo961881o

  日期：1997.3.1

  The bromo unsaturated carbohydrates 30 and 9 were prepared from ethyl 4,6-di-O-acetyl-2,3-dideoxy-D-erythro-hex-2-enopyranoside (1a) and (7) by deacetylation followed by monosilylation with TBDMSCl and then alkylation with BrCH2CBr=CH2. The three analogues 6 and 10 were obtained using the same methodology after inversion at C-4 via a Mitsunobu reaction. The N- and C-analogues 4b and 5 were prepared by palladium alkylation of the carbonate 2d with TsNHCH(2)CBr=CH2 and (CO(2)Me)(2)CHCH2CBr=CH2, respectively. Treatment of the unsaturated carbohydrates 3a and 9 with a catalytic amount of Pd(OAc)(2)/PPh(3) in CH3CN/H2O in the presence of Bu(4)NHSO(4) and NEt(3) afforded the bicyclic compound 14a. The N- and C-analogues 14b and 14c were obtained using the same conditions and starting, respectively, from 4b and 5. On the other hand, treatment of the three derivatives 6 and 10 under these conditions gave the furanic structure 15. In the case of compound 30, performing the reaction in the presence of sodium formate yielded the bicyclic 2-deoxy carbohydrate 17.