This simple sequence can be accomplished by a single chemist within several days on an 80g-scale to deliver the parent carboxylic acid for 11 in >50% overall yield from isoserine 14 without column chromatography. Subsequent RAE formation was facile and clean (8g-scale). Fortunately, a large difference in crystallinity provided a simple way to separate the diastereomers at this stage. Both diastereomers are a useful building block to access both enantiomers of an aminoalcohol.