Chlorosulfonic acid → Methyl N-[6-(chlorosulfonyl)-1H-benzimidazol-2-yl]carbamate

HRID 323754

반응식

HRID 323754 반응식
[C:1]([NH:5][C:6]1[NH:7][C:8]2[CH:14]=[CH:13][CH:12]=[CH:11][C:9]=2[N:10]=1)([O:3][CH3:4])=[O:2].[Cl:15][S:16](O)(=[O:18])=[O:17]>>[Cl:15][S:16]([C:13]1[CH:12]=[CH:11][C:9]2[N:10]=[C:6]([NH:5][C:1]([O:3][CH3:4])=[O:2])[NH:7][C:8]=2[CH:14]=1)(=[O:18])=[O:17]

참가 물질

3

반응물 2

HCID 24638Chlorosulfonic acidHCID 25429Carbendazim

생성물 1

HCID 15124047Methyl N-[6-(chlorosulfonyl)-1H-benzimidazol-2-yl]carbamate수율 78%

실험 절차

A solution of 2-carbomethoxyamino-benzimidazole (5.0 g, 0.026 mole) in chlorosulfonic acid (35.00 mL) was stirred at 0° C. for 30 minutes and at room temperature for 3 hours. The resulting dark colored reaction mixture was poured into an ice-water mixture (200 mL), and stirred at room temperature for 30 minutes. The resulting precipitate was filtered and washed with cold water (500 mL). The solid was dried overnight under high vacuum in a desiccator over NaOH pellets to give 5-chlorosulfonyl-2-carbomethoxyamino-benzimidazole (5.9 g, 78%) as a grey powder. 1H NMR (DMSO-d6) d: 3.89 (S, 3H), 7.55 (d, J=8.4 Hz, 1H), 7.65 (d, J=8.4 Hz, 1H), 7.88 (s, 1H). (German Patent DE 3826036)

후처리

  1. filtrationThe resulting precipitate was filtered
  2. washwashed with cold water (500 mL)
  3. dry with materialThe solid was dried overnight under high vacuum in a desiccator over NaOH pellets

출처 및 근거

ORD 기록
ord-1722a476cb3f4a10ad70b47b999e07fe
출처 데이터셋
uspto-grants-2001_04
특허 번호
US06214861B1

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