Carbamic acid, ethyl ester → Diethyl toluene-2,4-dicarbamate

HRID 2166658

반응식

HRID 2166658 반응식
[NH2:1][C:2]1[CH:7]=[C:6]([NH2:8])[CH:5]=[CH:4][C:3]=1[CH3:9].[C:10](=[O:15])([O:12][CH2:13][CH3:14])N>C(O)C>[CH2:13]([O:12][C:10]([NH:1][C:2]1[CH:7]=[C:6]([NH:8][C:10]([O:12][CH2:13][CH3:14])=[O:15])[CH:5]=[CH:4][C:3]=1[CH3:9])=[O:15])[CH3:14]

참가 물질

4

반응물 2

HCID 5641Carbamic acid, ethyl esterHCID 72612,4-Diaminotoluene

생성물 1

HCID 343975Diethyl toluene-2,4-dicarbamate

시약·촉매·용매 1

HCID 702Ethanol용매

실험 절차

275 g of a polyurea mixture based on 2,4-diamino-toluene having terminal amino tolyl groups (average molecular weight: 1500) were introduced into the apparatus described in Example 1. 513 g of 2,4-diamino-toluene, 933 g ethyl carbamate and 1250 g ethanol (approximately 96%) were subsequently added. The mixture was reacted for 6.0 hours at 200° C. After the apparatus had cooled and the pressure had been reduced, the reaction mixture was removed, filtered and analyzed by high pressure liquid chromatography (HPLC). A yield of 1100 g (68% of the theoretical yield) of 2,4-bis-(ethoxy carbonylamino)-toluene was obtained.

후처리

  1. additionwere introduced into the apparatus
  2. customThe mixture was reacted for 6.0 hours at 200° C
  3. temperatureAfter the apparatus had cooled
  4. customthe reaction mixture was removed
  5. filtrationfiltered

출처 및 근거

ORD 기록
ord-d00f46fb57034a189dbb0a132ce18804
출처 데이터셋
uspto-grants-1983_06
특허 번호
US04388238

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