Benzonitrile → 7-Bromo-2-phenyl-[1,2,4]triazolo[1,5-A]pyridine

HRID 517639

반응식

HRID 517639 반응식
[NH2:1][C:2]1[CH:7]=[C:6]([Br:8])[CH:5]=[CH:4][N:3]=1.O.N1C2C(=CC=C3C=2N=CC=C3)C=CC=1.[C:24](#[N:31])[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1>[Cu]Br>[Br:8][C:6]1[CH:5]=[CH:4][N:3]2[N:31]=[C:24]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[N:1]=[C:2]2[CH:7]=1

참가 물질

5

반응물 3

HCID 7505BenzonitrileHCID 212261,10-Phenanthroline hydrateHCID 6932822-Amino-4-bromopyridine

생성물 1

HCID 677755007-Bromo-2-phenyl-[1,2,4]triazolo[1,5-A]pyridine수율 60%

시약·촉매·용매 1

HCID 24593copper(I) bromide촉매

반응 조건

온도
130 °C

실험 절차

A mixture of 2-amino-4-bromopyridine (5.00 g, 28.9 mmol), copper (I) bromide (207 mg, 1.44 mmol), 1,10-phenanthroline monohydrate (289 mg, 1.44 mmol), and benzonitrile (125 mL) was heated in a 250-mL 3-necked flask to 130° C. During 23 h a gentle flow of air was bubbled through the reaction mixture (80% conversion, HPLC method see below). The dark brown suspension was then cooled to 0-5° C. and filtered. The filter cake was washed with TBME (50 mL) and dried to yield crude 7-bromo-2-phenyl-[1,2,4]triazolo[1,5-a]pyridine (4.87 g, 60%) as a green solid with 97.3% purity (HPLC area-%, HPLC method see below).

후처리

  1. customDuring 23 h a gentle flow of air was bubbled through the reaction mixture (80% conversion, HPLC method see below)
  2. temperatureThe dark brown suspension was then cooled to 0-5° C.
  3. filtrationfiltered
  4. washThe filter cake was washed with TBME (50 mL)
  5. customdried

출처 및 근거

ORD 기록
ord-5cc4716ae04d4b20baafafdd94bcc884
출처 데이터셋
uspto-grants-2015_08
특허 번호
US09115130B2

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