Methyl chloroformate → methyl(3R,4S)-3-[(3,6-diethylpyrazin-2-yl)amino]-4-(2-fluoroethoxy)pyrrolidine-1-carboxylate

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Reaction Steps

Following the procedure for the preparation of N-[(cis)-1-acetyl-4-ethoxypyrrolidin-3-yl]-5-(2,4-dichlorophenyl)-3,6-diethylpyrazin-2-amine but substituting 3,6-diethyl-N-[(3R,4S)-4-(2-fluoroethoxy)pyrrolidin-3-yl]pyrazin-2-amine and methyl chloroformate, and making non-critical variations provided the title compound as an oil: 1H NMR (400 MHz, DMSO-d6) δ) 7.61, 5.82, 4.55, 4.51, 4.39, 4.19, 3.73–3.48, 2.64–2.49, 1.20–1.14; IR (diffuse reflectance) 2967, 2934, 2873, 2450 (w), 2407 (w), 2350 (w), 2334 (w), 2226 (w), 1699 (s), 1499, 1457 (s), 1392 (s), 1158, 1142, 768, cm−1; HRMS (FAB) calcd for C16H25FN4O3+H 341.1989, found 341.1988.

Provenance & Evidence