title: (2S,NS)-N-Allyl-N-benzyl-1-hydr-oxy-3-(4-hydroxy-phen-yl)-N-methyl-propan-2-aminium bromide.
abstract: The title compound, C(20)H(26)NO(2) (+)·Br(-), is an N-chiral quaternary ammonium salt synthesized from (2S*)-N-benzyl-N-methyl-tyrosine methyl ester. The dihedral angle between the phenyl ring and the benzene ring is 11.61 (19)°. In the crystal structure, the allyl group is disordered over two positions with site occupancy factors of ca 0.8 and 0.2. The bromide anion links to the quaternary ammonium cations via O-H⋯Br hydrogen bonding. An intramolecular O-H⋯Br hydrogen bond is also observed.
authors.forename: Hua-Fang
authors.initials: HF
authors.lastname: Wu
authors.forename: Ying-Gang
authors.initials: YG
authors.lastname: Luo
authors.forename: Kai-Bei
authors.initials: KB
authors.lastname: Yu
authors.forename: Guo-Lin
authors.initials: GL
authors.lastname: Zhang
authors.forename: Xin-Fu
authors.initials: XF
authors.lastname: Pan