Phosphate → 2-Phenyl-4,5-dihydro-1,3-thiazole-4-carboxylic acid

HRID 522561

반응식

HRID 522561 반응식
[C:1](#[N:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N[C@H:10]([C:13]([OH:15])=[O:14])[CH2:11][SH:12].P([O-])([O-])([O-])=O>CO>[C:2]1([C:1]2[S:12][CH2:11][CH:10]([C:13]([OH:15])=[O:14])[N:8]=2)[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

참가 물질

5

반응물 3

HCID 1061PhosphateHCID 5862L-(+)-CysteineHCID 7505Benzonitrile

생성물 1

HCID 883272-Phenyl-4,5-dihydro-1,3-thiazole-4-carboxylic acid

시약·촉매·용매 1

HCID 887Methanol용매

반응 조건

온도
40 °C

실험 절차

Benzonitrile (40 mmol) was combined with L-cysteine (45 mmol) in 100 mL of 1:1 MeOH/pH 6.4 phosphate buffer solution. The reaction was stirred at 40° C. for 3 days. The precipitate was removed by filtration, and MeOH was removed using rotary evaporation. To the remaining solution was added 1M HCl to adjust to pH=2 under 0° C. The resulting precipitate was filtered to yield a white solid 2-phenyl-4,5-dihydrothiazole-4-carboxylic acid 42a, which was used directly to next step without purification.

후처리

  1. customThe precipitate was removed by filtration, and MeOH
  2. customwas removed
  3. customevaporation
  4. additionTo the remaining solution was added 1M HCl
  5. customto adjust to pH=2 under 0° C
  6. filtrationThe resulting precipitate was filtered

출처 및 근거

ORD 기록
ord-d1f8f8b34afc4e7ebd9d47ee9e4269c0
출처 데이터셋
uspto-grants-2016_05
특허 번호
US09334242B2

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