Triethylamine → 1-(1'-Carboxy-1'-hydroxymethyl)-4-tritylthio-2-azetidinone triethylamine salt

HRID 893931ノート

反応式

HRID 893931 の反応式
[C:1]([S:20][CH:21]1[NH:24][C:23](=[O:25])[CH2:22]1)([C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:26]([N:28]([CH2:31][CH3:32])[CH2:29][CH3:30])[CH3:27].O.[C:34]([OH:38])(=[O:37])[CH:35]=[O:36]>O1CCCC1.C(Cl)Cl>[CH2:26]([N:28]([CH2:31][CH3:32])[CH2:29][CH3:30])[CH3:27].[C:34]([CH:35]([N:24]1[CH:21]([S:20][C:1]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)([C:14]2[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=2)[C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[CH2:22][C:23]1=[O:25])[OH:36])([OH:38])=[O:37]

参加物

6

反応物 3

HCID 8471TriethylamineHCID 127801644-Tritylthio-2-azetidinoneHCID 15620607Glyoxylic acid, monohydrate

生成物 1

HCID 139097221-(1'-Carboxy-1'-hydroxymethyl)-4-tritylthio-2-azetidinone triethylamine salt収率 98%

試薬・触媒・溶媒 2

HCID 6344Dichloromethane溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 4-tritylthio-2-azetidinone (3.5 g, 10.15 mmol) in tetrahydrofuran (8 ml) was added triethylamine (1.42 ml, 10.15 mmol) and glyoxylic acid hydrate (1.02 g, 10.15 mmol). The mixture was stirred at room temperature with 4 A mol. sieves* (volume of 8 ml) for 1 h and allowed to stand at room temperature overnight. The solidified mixture was diluted with methylene chloride and filtered; the filtrate was evaporated and the residue crystallized from pentane to give 5.18 g (98%) of title compound as a white solid mp 112°-5° C.; ir νmax : 3100-3600, and 1755 cm-1 ; 1Hmr (CDCl3) δ:7.3 (15H, m), 4.92 and 5.10 (1H, 2s), 4.50 (1H, dd, J=8 Hz, J=3 Hz), 3.0 (1H, dd, J=15 Hz, J=7 Hz), 3.1 (6H, q, J=7 Hz), 2.70 (1H, dd, J=15 Hz, J=3 Hz), 2.0-3.5 (2H, m) and 1.21 ppm (9H, t, J=7 Hz).

後処理

  1. waitto stand at room temperature overnight
  2. filtrationfiltered
  3. customthe filtrate was evaporated
  4. customthe residue crystallized from pentane

出典と根拠

ORDレコード
ord-9da3c76d077243c8931d08822cfb8961
出典データセット
uspto-grants-1981_08
特許番号
US04282150

反応ノート

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