Ethyl chloroformate → Ethyl-4-chloro-5-(4-(ethoxycarbonyloxy)but-1-ynyl)-7-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)-7h-pyrrolo[2,3-d]pyrimidin-2-ylcarbamate

HRID 1984102Notes

Reaction equation

[NH2:1][C:2]1[N:3]=[C:4]([Cl:27])[C:5]2[C:10]([C:11]#[C:12][CH2:13][CH2:14][OH:15])=[CH:9][N:8]([CH2:16][C:17]3[C:22]([CH3:23])=[C:21]([O:24][CH3:25])[C:20]([CH3:26])=[CH:19][N:18]=3)[C:6]=2[N:7]=1.Cl[C:29]([O:31][CH2:32][CH3:33])=[O:30]>N1C=CC=CC=1.C(Cl)Cl>[CH2:32]([O:31][C:29](=[O:30])[NH:1][C:2]1[N:3]=[C:4]([Cl:27])[C:5]2[C:10]([C:11]#[C:12][CH2:13][CH2:14][O:15][C:29]([O:31][CH2:32][CH3:33])=[O:30])=[CH:9][N:8]([CH2:16][C:17]3[C:22]([CH3:23])=[C:21]([O:24][CH3:25])[C:20]([CH3:26])=[CH:19][N:18]=3)[C:6]=2[N:7]=1)[CH3:33]

Participants

Conditions

Temperature: 0 °C

Procedure

A suspension of 4-[2-Amino-4-chloro-7-(4-methoxy-3,5-dimethyl-pyridin-2-ylmethyl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl]-but-3-yn-1-ol (see example 2) (0.73 g) in anhydrous pyridine (5 mL) and DCM (25 mL) was treated with ethyl chloroformate (1 mL) at rt for 30 min. The mixture was cooled to 0° C., treated with addition EtOCOCl (1 mL), and the temperature was allowed to slowly reach rt overnight. The reaction mixture was diluted with DCM (30 mL) and washed sequentially with H2O, NH4OH 1M, and brine. The DCM was evaporated, but not the residual pyridine, Addition of MeOH (20 mL) induced crystallization of the product, as white needles. HPLC Rt=6.28 min.

Workup

customwas allowed to slowly reach rt overnight
washwashed sequentially with H2O, NH4OH 1M, and brine
customThe DCM was evaporated
additionnot the residual pyridine, Addition of MeOH (20 mL)
customcrystallization of the product

Sources & evidence

ORD record: ord-b69aba70a6e84a7ba944a1dda7b24f61
Source dataset: uspto-grants-2009_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07544672B2

Reaction notes

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