4-Toluenesulfonyl chloride → [(4R,6S)-2,2-dimethyl-6-(toluene-4-sulfonyloxymethyl)-[1,3]dioxan-4-yl]-acetic acid t-butyl ester

HRID 19204

反応式

[C:1]([O:5][C:6](=[O:18])[CH2:7][C@H:8]1[CH2:13][C@@H:12]([CH2:14][OH:15])[O:11][C:10]([CH3:17])([CH3:16])[O:9]1)([CH3:4])([CH3:3])[CH3:2].C(N(CC)C(C)C)(C)C.[C:28]1([CH3:38])[CH:33]=[CH:32][C:31]([S:34](Cl)(=[O:36])=[O:35])=[CH:30][CH:29]=1>CN(C)C1C=CN=CC=1.ClCCl>[C:1]([O:5][C:6](=[O:18])[CH2:7][C@H:8]1[CH2:13][C@@H:12]([CH2:14][O:15][S:34]([C:31]2[CH:32]=[CH:33][C:28]([CH3:38])=[CH:29][CH:30]=2)(=[O:36])=[O:35])[O:11][C:10]([CH3:17])([CH3:16])[O:9]1)([CH3:3])([CH3:2])[CH3:4]

参加物

実験手順

To a stirred solution of ((4R,6S)-6-hydroxymethyl-2,2-dimethyl-[1,3]dioxan-4-yl)-acetic acid t-butyl ester (2.24 g, 7.73 mmol), N,N-diisopropylethylamine (2.00 g, 15.46 mmol), 4-dimethylaminopyridine (0.95 g, 7.3 mmol) in dichloromethane (50 mL) was added p-toluenesulfonyl chloride (2.23 g, 11.59 mmol) at 23° C. under nitrogen and stirred for 3 h. The reaction mixture was diluted with dichloromethane and washed with 2N hydrochloric acid, saturated sodium chloride solution and the organic layer separated, dried over magnesium sulfate and concentrated in vacuo which afforded [(4R,6S)-2,2-dimethyl-6-(toluene-4-sulfonyloxymethyl)-[1,3]dioxan-4-yl]-acetic acid t-butyl ester (2.54 g, 80%) as a yellow waxy solid.

後処理

washwashed with 2N hydrochloric acid, saturated sodium chloride solution
customthe organic layer separated
dry with materialdried over magnesium sulfate
concentrationconcentrated in vacuo which

出典と根拠

ORDレコード: ord-d77327af52624da6bfa9666dc6ebad61
出典データセット: uspto-grants-2010_06
DOI: 10.6084/m9.figshare.5104873.v1
特許番号: US07741327B2

反応式

参加物

反応物 3

生成物 1

試薬・触媒・溶媒 2

実験手順

後処理

出典と根拠

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