Triethylamine → N-{5-Amino-3-[1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl]-1,2,4-triazin-6-yl}methanesulphonamide

HRID 2278854Notes

Reaction equation

[F:1][C:2]1[CH:25]=[CH:24][CH:23]=[CH:22][C:3]=1[CH2:4][N:5]1[C:9]2=[N:10][CH:11]=[CH:12][CH:13]=[C:8]2[C:7]([C:14]2[N:15]=[N:16][C:17]([NH2:21])=[C:18]([NH2:20])[N:19]=2)=[N:6]1.[CH3:26][S:27](Cl)(=[O:29])=[O:28].C(N(CC)CC)C>ClCCl>[NH2:20][C:18]1[N:19]=[C:14]([C:7]2[C:8]3[C:9](=[N:10][CH:11]=[CH:12][CH:13]=3)[N:5]([CH2:4][C:3]3[CH:22]=[CH:23][CH:24]=[CH:25][C:2]=3[F:1])[N:6]=2)[N:15]=[N:16][C:17]=1[NH:21][S:27]([CH3:26])(=[O:29])=[O:28]

Participants

Conditions

Temperature: 0 °C

Procedure

200 mg (0.595 mmol) of 3-[1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl]-1,2,4-triazine-5,6-diamine were admixed with 8 ml of dichloromethane and cooled to 0° C. 545 mg (4.757 mmol) of methanesulphonyl chloride and 481 mg (4.757 mmol) of triethylamine were added and the mixture was stirred at RT for 72 h. The mixture was diluted with dichloromethane and the precipitate was filtered off with suction. The filtrate was partitioned between water and ethyl acetate. The organic phase was dried over sodium sulphate and concentrated on a rotary evaporator. The residue was purified by preparative HPLC (mobile phase: acetonitrile/water with 0.1% TFA, gradient 30:70→95:5). This gave 57 mg (18% of theory) of the target compound.

Workup

filtrationthe precipitate was filtered off with suction
customThe filtrate was partitioned between water and ethyl acetate
dry with materialThe organic phase was dried over sodium sulphate
concentrationconcentrated on a rotary evaporator
customThe residue was purified by preparative HPLC (mobile phase: acetonitrile/water with 0.1% TFA, gradient 30:70→95:5)

Sources & evidence

ORD record: ord-a4d8777dc9984f2c9808400abbd95ce4
Source dataset: uspto-grants-2015_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09133191B2

Reaction notes

Loading…