Potassium Carbonate → N,N'-Bis-[2,3-diacetyloxypropyl]-5-[3-bromo-2-oxo-1-pyrrolidinyl]2,4,6-triiodo-1,3-benzenedicarboxamide

HRID 233063

반응식

HRID 233063 반응식
[C:1]([O:4][CH:5]([CH2:34][O:35][C:36](=[O:38])[CH3:37])[CH2:6][NH:7][C:8]([C:10]1[C:15]([I:16])=[C:14]([NH2:17])[C:13]([I:18])=[C:12]([C:19]([NH:21][CH2:22][CH:23]([O:29][C:30](=[O:32])[CH3:31])[CH2:24][O:25][C:26](=[O:28])[CH3:27])=[O:20])[C:11]=1[I:33])=[O:9])(=[O:3])[CH3:2].[Br:39][CH:40]([CH2:44][CH2:45]Br)[C:41](Br)=[O:42].C(=O)([O-])[O-].[K+].[K+]>CN(C)C(=O)C>[C:1]([O:4][CH:5]([CH2:34][O:35][C:36](=[O:38])[CH3:37])[CH2:6][NH:7][C:8]([C:10]1[C:15]([I:16])=[C:14]([N:17]2[CH2:45][CH2:44][CH:40]([Br:39])[C:41]2=[O:42])[C:13]([I:18])=[C:12]([C:19]([NH:21][CH2:22][CH:23]([O:29][C:30](=[O:32])[CH3:31])[CH2:24][O:25][C:26](=[O:28])[CH3:27])=[O:20])[C:11]=1[I:33])=[O:9])(=[O:3])[CH3:2]

참가 물질

5

반응물 3

HCID 11430Potassium Carbonate2회HCID 98975345-Amino-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodo-1,3-benzenedicarboxamide TetraacetateHCID 112898262,4-dibromobutanoyl Bromide

생성물 1

HCID 19048424N,N'-Bis-[2,3-diacetyloxypropyl]-5-[3-bromo-2-oxo-1-pyrrolidinyl]2,4,6-triiodo-1,3-benzenedicarboxamide

시약·촉매·용매 1

HCID 31374Dimethylacetamide용매

실험 절차

A solution of N,N'-bis-[2,3-diacetyloxypropyl]-5-amino-2,4,6-triiodo-1,3-benzenedicar boxamide (8.73 g, 10 mmol) in N,N-dimethylacetamide (100 ml) was treated with 2,4-dibromobutyroyl bromide (4.02 g, 13.0 mmol) under an atmosphere of nitrogen and the reaction mixture was stirred for 50 hours at ambient temperature. The mixture was then treated with ground potassium carbonate (1.65 g, 12.0 mmol) and stirred for 30 minutes at ambient temperature. An additional portion (1.65 g, 12.0 mmol) of finely ground potassium carbonate was added and the mixture was stirred for 1.9 hours. The suspended salts were filtered and the solvent was evaporated to obtain a brown oil. This crude product was purified by silica gel flash chromatography to isolate N,N'-Bis-[2,3-diacetyloxypropyl]-5-[3-bromo-2-oxo-1-pyrrolidinyl]2,4,6-triiodo-1,3-benzenedicarboxamide, as a white powder (7.28 g, 71% yield), m.p. 110°-112°.

후처리

  1. stirringstirred for 30 minutes at ambient temperature
  2. stirringthe mixture was stirred for 1.9 hours
  3. filtrationThe suspended salts were filtered
  4. customthe solvent was evaporated
  5. customto obtain a brown oil
  6. customThis crude product was purified by silica gel flash chromatography

출처 및 근거

ORD 기록
ord-bb8e395e9c6b4812b5103d40111acd54
출처 데이터셋
uspto-grants-1997_01
특허 번호
US05591846

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