Dimethyl Sulfoxide → HCID 59835994、化合物

HRID 271994ノート

反応式

HRID 271994 の反応式
[CH3:1][C:2]([CH3:21])([CH3:20])[C:3]([N:5]1[CH2:10][CH2:9][C:8]([CH2:17][CH2:18][OH:19])([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[O:7][CH2:6]1)=[O:4].CS(C)=O.C(N(C(C)C)CC)(C)C>C(Cl)Cl>[CH3:1][C:2]([CH3:21])([CH3:20])[C:3]([N:5]1[CH2:10][CH2:9][C:8]([CH2:17][CH:18]=[O:19])([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[O:7][CH2:6]1)=[O:4]

参加物

5

反応物 3

HCID 679Dimethyl SulfoxideHCID 81531DiisopropylethylamineHCID 689336852-[3-(2,2-Dimethylpropanoyl)-6-phenyl-1,3-oxazinan-6-yl]ethanol

生成物 1

HCID 59835994HCID 59835994、化合物収率 98%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

反応条件

温度
0 °C

実験手順

To a 0° C. solution of the above 2-[3-(2,2-dimethylpropanoyl)-6-phenyl-1,3-oxazinan-6-yl]ethanol, dimethyl sulfoxide (10 mL, 141 mmol) and diisopropylethylamine (10.5 mL, 60 mmol) in 60 mL CH2Cl2 was added SO3.pyr (9.0 g, 57 mmol) in one portion. The reaction mixture was stirred at 0° C. for 2 h, quenched with saturated aqueous NaHCO3, extracted with CHCl3, dried (Na2SO4) and chromatographed (2:1 Hex:EtOAc) to provide [3-(2,2-dimethylpropanoyl)-6-phenyl-1,3-oxazinan-6-yl]acetaldehyde (2.84 g, 98%) as an oil. 1H NMR (400 MHz, CDCl3): δ 9.64 (t, 1H, J=2.7 Hz), 7.45-7.41 (m, 4H), 7.33 (m, 1H), 5.49 (dd, 1H, J=11.1, 1.9 Hz), 4.74 (d, 1H, J=11.5 Hz), 4.27 (m, 1H), 3.08 (m, 1H), 2.72 (ABqd, 2H, J=15.3, 2.8 Hz), 2.43 (ddd, 1H, J=14.2, 4.1, 3.0 Hz), 2.11 (ddd, 1H, J=14.2; 11.4, 4.3 Hz), 1.28 (s, 9H). ESI-MS 312 (M+Na).

後処理

  1. customquenched with saturated aqueous NaHCO3
  2. extractionextracted with CHCl3
  3. dry with materialdried (Na2SO4)
  4. customchromatographed (2:1 Hex:EtOAc)

出典と根拠

ORDレコード
ord-aba813ce88c240f098975c565aa426d4
出典データセット
uspto-grants-2008_11
特許番号
US07452992B2

反応ノート

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