... Vol. 11, A. H. Blalt, Ed. ... The crude product was dried (KOH) and fractionally distilled (Vigreiis column) to give 9b, bp 79-80" (20 mm) and 12% 1.4.387, in 70yG yield (22.3 g); purity by glpc was >99%. Anal. ... AND N-(2-BROMOALKYL)-1.3-PROP.iNEDI.IMIKE No. ...