Alkyl 2-chloro-2-cyclopropylideneacetates 2 serve as universal starting materials for a new general synthesis of cyclopropylglycines by a simple three-to four-step methodology. 1,4-Addition of nucleophiles, substitution with azide ion, and mild catalytic deprotection lead to a variety of salt-free cyclopropyl-substituted amino acids in good yields, including the natural products 2-( 1-methylcyclopropyl)glycine (4) and cleonin (5).