Synthesis
The general procedure for the synthesis of N-BOC-4-(3'-hydroxypropyl)-piperidine from 3-(4-piperidinyl)-1-propanol and di-tert-butyl dicarbonate was as follows:
1. Di-tert-butyl dicarbonate (3.66 g, 16.8 mmol) was slowly added to a stirring solution of anhydrous dichloromethane (20 mL) of 3-(4-piperidinyl)-1-propanol (1.60 g, 11.2 mmol) under nitrogen protection and the reaction was carried out at ambient temperature.
2. The resulting reaction mixture was stirred continuously for 2 hours.
3. Upon completion of the reaction, the mixture was purified directly by silica gel column chromatography with the eluent being methanol in dichloromethane (0-3% gradient).
4. The target fraction was collected to afford N-BOC-4-(3'-hydroxypropyl)-piperidine as a clear oil (2.40 g, 88% yield).
References
[1] Organic Letters, 2002, vol. 4, # 4, p. 549 - 552
[2] Patent: US2008/306082, 2008, A1. Location in patent: Page/Page column 5-6
[3] Patent: US6235731, 2001, B1
[4] Organic and Biomolecular Chemistry, 2014, vol. 12, # 5, p. 783 - 794
[5] Tetrahedron, 1999, vol. 55, # 39, p. 11619 - 11639
