Hydrochloric Acid → HCID 58074319, compound

Participants

Reaction Conditions

Reaction Steps

HNiPr2 (246 μL, 1.74 mmol, 3.0 Eq) was dissolved in anhydrous THF (10 mL) and cooled to −78° C. under nitrogen. 2.5 M BuLi in hexanes (700 μL, 1.74 mmol, 3.0 Eq) was added dropwise and the reaction stirred at −78° C. for 15 minutes then warmed to 0° C. for 30 minutes. The reaction was cooled to −78° C. and 1-[1-(2-chloro-phenyl)-ethyl]-1,2,3,4-tetrahydro-thieno[3,2-e][1,4]diazepin-5-one (178 mg, 0.58 mmol, 1.0 Eq) was in anhydrous THF (5 mL) was added dropwise. The reaction was stirred at −78° C. for 2 hours. 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxa-borolane (355 μL, 1.74 mmol, 3.0 Eq) in anhydrous THF (5 mL) was added and the reaction stirred at −78° C. for 20 minutes them warmed to ambient temperature for 1.5 hours. 1M HCl (20 mL) was added and the mixture extracted with EtOAc (3×40 mL). The combined organic extracts were washed with brine (40 mL), dried (MgSO4) and concentrated in vacuo. The yellow oil obtained was used without further purification; 1H NMR (DMSO D6) 1.28 (12H, s), 1.51 (3H, d), 2.93-2.99 (1H, m), 3.03-3.13 (2H, m), 3.20-3.26 (1H, m), 5.32 (1H, dd), 6.19 (1H, br s), 7.20-7.28 (3H, m), 7.33-7.36 (2H, m); LC/MS M+1 (obs.) 433.4.

Provenance & Evidence