Propargyl alcohol → 3-(3-(4-chloro-1-methyl-5-phenyl-1H-pyrazolo[3,4-c]pyridazin-3-yl)phenyl)prop-2-yn-1-ol

HRID 1775547Notes

Reaction equation

[Cl:1][C:2]1[C:7]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=[N:6][N:5]=[C:4]2[N:14]([CH2:23]CO)[N:15]=[C:16]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[C:3]=12.[CH2:26]([OH:29])[C:27]#[CH:28].C(N(CC)CC)C.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>O1CCOCC1.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>[Cl:1][C:2]1[C:7]([C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=2)=[N:6][N:5]=[C:4]2[N:14]([CH3:23])[N:15]=[C:16]([C:17]3[CH:22]=[C:21]([C:28]#[C:27][CH2:26][OH:29])[CH:20]=[CH:19][CH:18]=3)[C:3]=12

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 4-chloro-3-(3-iodophenyl)-1-methyl-5-phenyl-1H-pyrazolo[3,4-c]pyridazine (Compound 7, Example 32) (80 mg, 0.18 mmol), propargyl alcohol (41 mg, 0.74 mmol), triethylamine (87 μl, 0.63 mmol), Cut (3.5 mg, 0.018 mmol), triphenylphosphine (5 mg, 0.018 mmol) and Pd(PPh3)4 (20 mg, 0.018 mmol) in 1,4-dioxane (1.5 mL) was heated at 100° C. for 4 h in a sealed tube. The reaction mixture was partitioned between CH2Cl2 and water. The organic phase was separated and dried using a phase separating cartridge then concentrated in vacuo. The crude residue was purified by column chromatography (silica gel, 20-30% ethyl acetate/isohexane), yielding Compound 30 as a solid (26 mg).

Workup

customThe reaction mixture was partitioned between CH2Cl2 and water
customThe organic phase was separated
customdried
customseparating cartridge
concentrationthen concentrated in vacuo
customThe crude residue was purified by column chromatography (silica gel, 20-30% ethyl acetate/isohexane)

Sources & evidence

ORD record: ord-1917183bf87a436aa9c1a0ca5e92d22e
Source dataset: uspto-grants-2016_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09260381B2

Reaction notes

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