Ammonia → 2,3-Dichloro-4,6-dinitrophenol

HRID 1609376노트

반응식

HRID 1609376 반응식
NC1C([OH:8])=CC(O)=C(N)C=1.[OH-].[Na+].N.[O-]O.C1(C(C)C)C=CC=CC=1.[Cl:25][C:26]1[CH:31]=[C:30]([N+:32]([O-:34])=[O:33])[CH:29]=[C:28]([N+:35]([O-:37])=[O:36])[C:27]=1[Cl:38]>C(Cl)Cl>[Cl:25][C:26]1[C:27]([Cl:38])=[C:28]([N+:35]([O-:37])=[O:36])[CH:29]=[C:30]([N+:32]([O-:34])=[O:33])[C:31]=1[OH:8]

참가 물질

7

반응물 5

HCID 222Ammonia4회HCID 14798Sodium HydroxideHCID 4588214,6-DiaminoresorcinolHCID 110209011,2-Dichloro-3,5-dinitrobenzeneHCID 53627471Cumen hydroperoxide

생성물 1

HCID 108579782,3-Dichloro-4,6-dinitrophenol

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

In a preferred embodiment for making diaminoresorcinol, the base, e.g., sodium hydroxide, is first dissolved in refluxing liquid ammonia in an inert atmosphere. The temperature of refluxing liquid ammonia is dependent upon the pressure and is typically between about -50° C. to about -10° C. Under atmospheric pressure conditions, the refluxing temperature of liquid ammonia is about -33° C. A solution of cumene hydroperoxide and 1,2-dichloro-3,5-dinitrobenzene in methylene chloride is then added to the stirred liquid ammonia reaction mixture at a rate such that the temperature remains at the refluxing temperature. Upon completion of the addition, the ammonia is evaporated and 2,3-dichloro-4,6-dinitrophenol may be isolated by pouring the reaction mixture into excess aqueous hydrochloric acid and extracted with ethyl acetate. Preferably, the 2,3-dichloro-4,6-dinitrophenol product is not isolated or purified, but is directly converted to 4,6-diaminoresorcinol, thus making the production of 4,6-diaminoresorcinol from 1,2-dichloro-3,5-dinitrobenzene a "one pot" process.

후처리

  1. customis typically between about -50° C. to about -10° C
  2. customis about -33° C
  3. additionUpon completion of the addition
  4. customthe ammonia is evaporated

출처 및 근거

ORD 기록
ord-429a71b20f00411088209a83430522f2
출처 데이터셋
uspto-grants-1995_03
특허 번호
US05399768

반응 노트

불러오는 중…