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Ethyldiphenylphosphine → tert-butyl 4-(tert-butylcarbamoyl)-4-(N-methylacetamido)-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)octylcarbamate

HRID 579541
ノート
印刷プレビュー

反応式

HRID 579541 の反応式
C1(P(CC)C2C=CC=CC=2)C=CC=CC=1.[CH3:16][C:17]1([CH3:24])[C:21]([CH3:23])([CH3:22])[O:20][BH:19][O:18]1.[C:25]([NH:29][C:30]([C:32]([N:48]([CH3:52])[C:49](=[O:51])[CH3:50])([CH2:44][CH2:45][CH:46]=[CH2:47])[CH2:33][CH2:34][CH2:35][NH:36][C:37](=[O:43])[O:38][C:39]([CH3:42])([CH3:41])[CH3:40])=[O:31])([CH3:28])([CH3:27])[CH3:26]>ClCCl>[C:25]([NH:29][C:30]([C:32]([N:48]([CH3:52])[C:49](=[O:51])[CH3:50])([CH2:44][CH2:45][CH2:46][CH2:47][B:19]1[O:20][C:21]([CH3:23])([CH3:22])[C:17]([CH3:24])([CH3:16])[O:18]1)[CH2:33][CH2:34][CH2:35][NH:36][C:37](=[O:43])[O:38][C:39]([CH3:40])([CH3:42])[CH3:41])=[O:31])([CH3:26])([CH3:27])[CH3:28]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 69082EthyldiphenylphosphineHCID 27347684,4,5,5-Tetramethyl[1,3,2]dioxaborolaneHCID 86663727tert-butyl 4-(tert-butylcarbamoyl)-4-(N-methylacetamido)oct-7-enylcarbamate

生成物 1

HCID 66833610tert-butyl 4-(tert-butylcarbamoyl)-4-(N-methylacetamido)-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)octylcarbamate収率 90.1%

試薬・触媒・溶媒 1

HCID 6344
Dichloromethane
溶媒
3 回

実験手順

While under an atmosphere of argon, a solution of bis(1,5-dicyclooctadiene)diiridium(I)dichloride (6 mg; 0.009 mmol) and diphenylphosphinoethane (7 mg, 0.018 mmol) in dichloromethane (1 mL) was cooled to 0° C. and treated with 4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.174 mL, 1.2 mmol). After stirring for 30 min, a solution of tert-butyl 4-(tert-butylcarbamoyl)-4-(N-methylacetamido)oct-7-enylcarbamate (120 mg, 0.3 mmol) in dichloromethane (4 mL) was added and the solution was stirred an additional 16 h. Dichloromethane (10 mL) was added, and the solution was washed successively with water and sat'd aq sodium chloride, dried over MgSO4, filtered and concentrated. Purification by column chromatography (3% methanol in dichloromethane) gave tert-butyl 4-(tert-butylcarbamoyl)-4-(N-methylacetamido)-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)octylcarbamate (142 mg, 90%). ESI MS found for C27H52BN3O6 m/z [548.7 (M+Na+), 526.7 (M+1), 570.8 (M+HCOO−), 524.6 (M−1)].

後処理

  1. stirringthe solution was stirred an additional 16 h
  2. washthe solution was washed successively with water
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customPurification by column chromatography (3% methanol in dichloromethane)

出典と根拠

ORDレコード
ord-0b13197b573e4b33a04650618c7090b8
出典データセット
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09040703B2

反応ノート

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