Crystal structure of R(–)–1–Tosyl–2–methylpyrrolidine

Abstract

Crystal structure of R( -)-1-Tosyl-2-methylpyrrolidineThe crystal structure of R( -)-1-tosyl-2-methylpyrrolidine has been determined by X-ray structure analysis. The compound crystallizes in the monoclinic space group P2, with cell parameters a = 7.858( l), b = 14.929(6), c = 11.128(1) A, p = 105.42(1) ' . The structure has been solved by direct methods and relined to R = 0.046. There are two crystallographically independent molecules A and B in the asymmetric unit. The pyrrolidine ring of molecule A is disordered with atom C4 occupying two possible sites. The S atom has a distorted tetrahedral coordination in both the molecules. Two bifurcated hydrogen bonds are observed. Molecules are held together by hydrogen bonds.GUPTA et al.: Structure of R( -)-l-Tosyl-2-methylpyrrolidine taken as observed. During data collection three strong reflections (2 1 z , J 0 1,2 1 3) measured after every 55 reflections showed that the crystal was stable to X-rays. Data were corrected for Lorentz and polarization effects. The crystallographic data are summarized In Table 1.

2-Bromo-N-(p-toluenesulfonyl)pyrrole

“…The bonding parameters of (I) ( Fig. 1) are very similar to those of related tosylpyrroles (Abell et al, 1998), pyrrolidines (Sambyal et al, 1995;Gupta et al, 1995), and other related sulfonylamides (Ohwada et al, 1998). As opposed to the majority of the latter, the bonding about the N atom is nearly planar with a bond angle sum of 358.4 , while the average value for 349 sulfonylamides was found to be 352.4 (Ohwada et al, 1998).…”