Sodium Hydroxide → Hydrazine, (3-bromo-4-chlorophenyl)-, hydrochloride (1:?)

HRID 28230노트

반응식

HRID 28230 반응식
[Br:1][C:2]1[CH:3]=[C:4]([CH:6]=[CH:7][C:8]=1[Cl:9])[NH2:5].[N:10]([O-])=O.[Na+].S(=O)(O)[O-].[Na+].[OH-].[Na+]>Cl.O>[ClH:9].[Br:1][C:2]1[CH:3]=[C:4]([NH:5][NH2:10])[CH:6]=[CH:7][C:8]=1[Cl:9]

참가 물질

7

반응물 4

HCID 14798Sodium HydroxideHCID 128437223-Bromo-4-chloroanilineHCID 23665763Sodium BisulfiteHCID 23668193Sodium Nitrite

생성물 1

HCID 20530451Hydrazine, (3-bromo-4-chlorophenyl)-, hydrochloride (1:?)

시약·촉매·용매 2

HCID 313Hydrochloric Acid용매2회HCID 962Water용매2회

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온도
-10 °C

실험 절차

3-Bromo-4-chloroaniline (41.3 g., 0.2 mole) in 90 ml of 6 N hydrochloric acid, cooled to -10° is treated with 14 g. of sodium nitrite in 30 ml. of water. Add this solution, with stirring, to a cold (-10° C.) solution of 55 g. of sodium bisulfite and 20 g. of sodium hydroxide in 200 ml. of water. After the red precipitate appears, allow the mixture to warm to room temperature. Add 200 ml. of concentrated hydrochloric acid and heat at 90°-100° C. for 4 hours. Allow the mixture to cool overnight, collect the material washing with 50 ml of cold 3 N hydrochloric acid. The product is dried. Recrystallization from ether-methanol yields the desired material, m.p. 208°-210° C.

후처리

  1. additionis treated with 14 g
  2. additionAdd this solution
  3. temperatureto warm to room temperature
  4. additionAdd 200 ml
  5. temperatureAllow the mixture to cool overnight
  6. customcollect the material
  7. washwashing with 50 ml of cold 3 N hydrochloric acid
  8. customThe product is dried
  9. customRecrystallization from ether-methanol

출처 및 근거

ORD 기록
ord-819ce1ab52004c09a9740a7e6cebbf5b
출처 데이터셋
uspto-grants-1980_09
특허 번호
US04225711

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