... Volume: Page: Digital Object Identifier (DOI). ... 2k In these S N 2' reactions, alkylation occurred on one of the two possible diastereotopic faces to give an enantiomer. ... 8, 1,2- dichloropropane, −78, 1, 76, 77. 9, 1,2-dichloropropane, −100, 3, 82, 81. ...