Triethylamine → 6-Phenylethynyl-pyrazolo[1,5-a]pyrimidine

HRID 2042136노트

반응식

HRID 2042136 반응식
Br[C:2]1[CH:3]=[N:4][C:5]2[N:6]([N:8]=[CH:9][CH:10]=2)[CH:7]=1.[C:11]1([C:17]#[CH:18])[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.C(N(CC)CC)C.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[C:11]1([C:17]#[C:18][C:2]2[CH:3]=[N:4][C:5]3[N:6]([N:8]=[CH:9][CH:10]=3)[CH:7]=2)[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1

참가 물질

8

반응물 4

HCID 8471TriethylamineHCID 10821PhenylacetyleneHCID 11776TriphenylphosphineHCID 222367016-Bromopyrazolo[1,5-a]pyrimidine

생성물 1

HCID 509149146-Phenylethynyl-pyrazolo[1,5-a]pyrimidine

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 178418476HCID 178418476, 화합물촉매HCID 8028Tetrahydrofuran용매

반응 조건

온도
65 °C

실험 절차

Bis-(triphenylphosphine)-palladium (II) dichloride (27 mg, 0.04 mmol) was dissolved in 1 ml of THF. 6-Bromo-pyrazolo[1,5-a]pyrimidine (150 mg, 0.76 mmol) and phenylacetylene (130 μl, 1.21 mmol) were added at room temperature. Triethylamine (310 μl, 2.3 mmol), triphenylphosphine (6 mg, 0.023 mmol) and copper (I) iodide (4 mg, 0.023 mmol) were added and the mixture was stirred for 2 hours at 65° C. The reaction mixture was cooled and extracted with saturated NaHCO3 solution and two times with a small volume of dichloromethane. The crude product was purified by flash chromatography by directly loading the dichloromethane layers onto a silica gel column and eluting with heptane:ethyl acetate 100:0->50:50. The desired compound was obtained as a yellow solid (150 mg, 90% yield), MS: m/e=220.3 (M+H+).

후처리

  1. temperatureThe reaction mixture was cooled
  2. extractionextracted with saturated NaHCO3 solution and two times with a small volume of dichloromethane
  3. customThe crude product was purified by flash chromatography
  4. washeluting with heptane:ethyl acetate 100:0->50:50

출처 및 근거

ORD 기록
ord-b3466dee2c2245f7bf133fe4831f714d
출처 데이터셋
uspto-grants-2013_11
특허 번호
US08586581B2

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