Triphenylphosphine → HCID 22154693, 화합물

HRID 1708887노트

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HRID 1708887 반응식
N(C(OCC)=O)=NC(OCC)=O.[F:13][C:14]1[C:19]([F:20])=[CH:18][C:17]([N+:21]([O-:23])=[O:22])=[CH:16][C:15]=1O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[CH2:44]([N:51]1[CH2:56][CH2:55][N:54]([CH2:57][C:58]2[CH:63]=[CH:62][CH:61]=[CH:60][CH:59]=2)[CH2:53][CH:52]1[CH2:64][OH:65])[C:45]1[CH:50]=[CH:49][CH:48]=[CH:47][CH:46]=1>C1COCC1>[CH2:44]([N:51]1[CH2:56][CH2:55][N:54]([CH2:57][C:58]2[CH:63]=[CH:62][CH:61]=[CH:60][CH:59]=2)[CH2:53][CH:52]1[CH2:64][O:65][C:18]1[C:17]([N+:21]([O-:23])=[O:22])=[CH:16][CH:15]=[C:14]([F:13])[C:19]=1[F:20])[C:45]1[CH:46]=[CH:47][CH:48]=[CH:49][CH:50]=1

참가 물질

6

반응물 4

HCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 10827800(1,4-Dibenzylpiperazin-2-yl)methanolHCID 221546562,3-Difluoro-5-nitrophenol

생성물 1

HCID 22154693HCID 22154693, 화합물수율 6,043.8%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

(1Ba) A solution of 4.7 g (27 mmol) of diethyl azodicarboxylate in 15 ml of THF was added dropwise at 15° C. while stirring to a solution of 3.9 g (22.5 mmol) of 2,3-difluoro-5-nitrophenol, 7.1 g (27 mmol) of triphenylphosphine and 8 g (0.27 mmol) of 1,4-dibenzyl-2-hydroxymethylpiperazine in 250 ml of THF. The yellow reaction solution was then stirred at room temperature for an additional 3 hours. After concentrating the reaction solution, the oily residue was stirred with a total of 2 l of hot n-hexane in several portions. The hexane solution was separated and cooled. The separated triphenylphosphine oxide was removed by filtration under suction, and the filtrate was concentrated. Chromatography on silica gel with ether/n-hexane (1:1) as the eluent gave 7.4 g of 1,4-dibenzyl-2-[(6-nitro-2,3-difluorophenoxy)methyl]-piperazine as a brown oil.

후처리

  1. concentrationAfter concentrating the reaction solution
  2. stirringthe oily residue was stirred with a total of 2 l of hot n-hexane in several portions
  3. customThe hexane solution was separated
  4. temperaturecooled
  5. customThe separated triphenylphosphine oxide was removed by filtration under suction
  6. concentrationthe filtrate was concentrated

출처 및 근거

ORD 기록
ord-024405a648a94e6d80922e52eacad7d1
출처 데이터셋
uspto-grants-1990_08
특허 번호
US04946847

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