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Racemic 2-methyl-1,1-diphenyl-3-(1-piperidyl)-1-propanol (4) and 2-methyl-1,1-diphenyl-3-(1-pyrrolidyl)-1-propanol (5) have been synthesized and optically resolved employing (R)- and (S)-mandelic acid, respectively, as resolving agents. The absolute configurations of the enantiomers of 4 and 5 have been established as (-)-(R) and (+)-(S) by crystal structure analyses of (-)-(R)-2-methyl-1,1-diphenyl-3-(1-piperidinio)-1-propanol (+)-(S)-mandelate and (+)-(S)-2-methyl-1,1-diphenyl-3-(1-pyrrolidinio)-1-propanol (-)-(R)-mandelate. The corresponding methiodides have been prepared.

acta chemica scandinavica/acta chemica scandinavica. b, organic chemistry and biochemistry/acta chemica scandinavica. a, physical and inorganic chemistry/acta chemica scandinavica. series b. organic chemistry and biochemistry/acta chemica scandinavica. series a, physical and inorganic chemistry

Anticholinergic Agents. 2. Absolute Configurations of 2-Methyl-1,1-Diphenyl-3-(1-piperidyl)-1-propanol and 2-Methyl-1,1-diphenyl-3-(1-pyrrolidyl)-1-propanol. Crystal Structures of the Corresponding Mandelates.