Tributylstannane → HCID 178441857, 화합물

HRID 486022노트

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HRID 486022 반응식
[CH2:1]([C:5]1[NH:6][C:7]2[C:12]([C:13](=[O:15])[N:14]=1)=[CH:11][C:10](I)=[CH:9][CH:8]=2)[CH2:2][CH2:3][CH3:4].C([SnH](CCCC)CCCC)CCC.[O:30]1CCC[CH2:31]1>CN(C)C=O.C1(C)C=CC=CC=1.[Cl-].[Na+].O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:1]([C:5]1[NH:6][C:7]2[C:12]([C:13](=[O:15])[N:14]=1)=[CH:11][C:10]([CH:31]=[O:30])=[CH:9][CH:8]=2)[CH2:2][CH2:3][CH3:4]

참가 물질

8

반응물 3

HCID 5948TributylstannaneHCID 8028TetrahydrofuranHCID 178441862HCID 178441862, 화합물

생성물 1

HCID 178441857HCID 178441857, 화합물

시약·촉매·용매 4

HCID 178418397HCID 178418397, 화합물촉매HCID 1140Toluene용매HCID 6228Dimethylformamide용매HCID 57417360Sodium chloride; water용매

실험 절차

To a solution of 1.0 g of 2-butyl-1,4-dihydro-4-oxo-6-iodo-quinazoline and 0.355 g of tetrakis(triphenylphosphine)palladium in 15 ml of tetrahydrofuran and 5 ml of N,N-dimethylformamide, heated to 55° C. under an atmosphere of carbon monoxide is added a solution of 1.40 g of tri-n-butyltin hydride in 2.5 ml of toluene over 6 hours via a syringe pump. After the addition is complete the reaction is allowed to cool to room temperature, diluted with brine and extracted with chloroform. The combined organics are concentrated in vacuo and the resulting residue triturated with ether. The precipitate is collected by filtration and purified by flash chromatography on silica gel, eluting with 1:1 ethyl acetate-hexanes to give 0.35 g of the desired product, m.p. 242°-244° C.

후처리

  1. additionAfter the addition
  2. extractionextracted with chloroform
  3. concentrationThe combined organics are concentrated in vacuo
  4. customthe resulting residue triturated with ether
  5. filtrationThe precipitate is collected by filtration
  6. custompurified by flash chromatography on silica gel
  7. washeluting with 1:1 ethyl acetate-hexanes

출처 및 근거

ORD 기록
ord-a5f6a5c8810540c5a50495a02594673f
출처 데이터셋
uspto-grants-1994_03
특허 번호
US05290780

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