Hydrazine hydrate (1:1) → 4-Chloro-2-ethyl-6-hydrazinylpyrimidine

HRID 1589632노트

반응식

HRID 1589632 반응식
[Cl:1][C:2]1[CH:7]=[C:6](Cl)[N:5]=[C:4]([CH2:9][CH3:10])[N:3]=1.O.[NH2:12][NH2:13]>CO>[Cl:1][C:2]1[CH:7]=[C:6]([NH:12][NH2:13])[N:5]=[C:4]([CH2:9][CH3:10])[N:3]=1

참가 물질

4

반응물 2

HCID 24654Hydrazine hydrate (1:1)HCID 5184654,6-Dichloro-2-ethylpyrimidine

생성물 1

HCID 133936134-Chloro-2-ethyl-6-hydrazinylpyrimidine수율 86.9%

시약·촉매·용매 1

HCID 887Methanol용매

반응 조건

온도
0 °C

실험 절차

To a stirred, cold (0° C.) solution of 60 g (0.34 mole) of 4,6-dichloro-2-ethylpyrimidine in 500 ml of methanol was added 35 g (0.7 mole) of hydrazine hydrate while maintaining the temperature below 10° C. Stirring was continued for 2 hours after completion of the addition, the temperature being maintained at 0° C. The mixture was allowed to warm to about 20° C. and was stirred for 16 hours. The white solid was collected by filtration and the filtrate was partially evaporated to provide a second crop. The combined solids were washed with water and air dried to provide 51 g (77%) of 4-chloro-2-ethyl-6-hydrazinylpyrimidine, m.p. 147°-150° C.

후처리

  1. temperaturewhile maintaining the temperature below 10° C
  2. additionafter completion of the addition
  3. temperatureto warm to about 20° C.
  4. stirringwas stirred for 16 hours
  5. filtrationThe white solid was collected by filtration
  6. customthe filtrate was partially evaporated
  7. customto provide a second crop
  8. washThe combined solids were washed with water and air
  9. customdried

출처 및 근거

ORD 기록
ord-c3c10e029bad44bb8b0d8cdc4cd45702
출처 데이터셋
uspto-grants-1986_02
특허 번호
US04572910

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