三乙胺 → 叔丁基二苯基硅醇

HRID 1069106笔记

反应方程式

HRID 1069106 反应方程式
BrCCCCC[OH:7].CCN(CC)CC.[CH3:15][C:16]([Si:19](Cl)([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)([CH3:18])[CH3:17].[NH4+].[Cl-]>C(Cl)Cl.CN(C1C=CN=CC=1)C>[Si:19]([OH:7])([C:16]([CH3:18])([CH3:17])[CH3:15])([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1

参与物

7

反应物 4

HCID 8471三乙胺HCID 25517氯化铵HCID 94078叔丁基二苯基氯硅烷HCID 1187095-溴-1-戊醇

产物 1

HCID 608071叔丁基二苯基硅醇收率 155.3%

试剂、催化剂与溶剂 2

HCID 142844-二甲氨基吡啶(DMAP)催化剂HCID 6344二氯甲烷溶剂

实验过程

A solution of 5-bromo-pentanol (0.9889 g, 5.9 mmol, 1 eq) in anhydrous CH2Cl2 (20 mL) under N2 at 25° C. was treated with anhydrous Et3N (1.0 mL, 7.2 mmol, 1.2 eq), TBDPSCl (1.7 mL, 6.5 mmol, 1.1 eq) and DMAP (0.23 g, 1.9 mmol, 0.3 eq). The reaction mixture was stirred for 2 h before an aqueous solution of saturated NH4Cl (100 mL) was added. The aqueous layer was extracted with EtOAc (3×100 mL) and the organic layers were dried (Na2SO4), filtered, and concentrated in vacuo. The crude product was chromatographed (Sio2, 5×20 cm, 0-20% EtOAc/hexanes, gradient elution) to afford TBDPSOH (2.35 g, 98%) as a clear oil; 1H NMR (CDCl3, 400 MHz) δ7.66-7.60 (m, 4H) 7.44-7.33 (m, 6H), 3.64 (t, 2H, J=6.1 Hz), 3.37 (t, 2H, J=6.9 Hz), 1.82 (p, 2H, J=7.3 Hz), 1.59-1.45 (m, 4H), 1.03 (s, 9H); 13C NMR (CDCl3, 100 MHz) δ135.6, 129.6, 127.6, 127.5, 63.5, 33.9, 32.5, 31.6, 26.8, 24.5, 19.2; IR (film) υmax 3069, 2930, 2856, 2359, 1470, 1427, 1389, 1106, 822, 738, 700 cm−1; FABHRMS (NBA-CsI) m/z 537.0235 (C21H29OSiBr+Cs+ requires 537.0225).

后处理

  1. additionwas added
  2. extractionThe aqueous layer was extracted with EtOAc (3×100 mL)
  3. dry with materialthe organic layers were dried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe crude product was chromatographed
  7. wash(Sio2, 5×20 cm, 0-20% EtOAc/hexanes, gradient elution)

来源与证据

ORD记录
ord-350fe17c09524b658fe792d39e6b50b7
来源数据集
uspto-grants-2001_06
专利号
US06251931B1

反应笔记

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