Table 1.

Synthesis of γ-oxo-amino acids.

Entry	1	R	Yield (%)	2	Yield (%)
					Meth. Aa	Meth. Bb
1	1a [26]	CH3	92	2a	78	91
2	1b [26]	CH2Cl	82	2b	75	90
3	1c [26]	CH2OC6H5	86	2c	76	93
4	1d	CH2O-(p-Cl-C6H4)	88	2d	72	82
5	1e	CH2O-(o-NO2-C6H4)	84	2e	75	87
6	1f	CH2O-(p-NO2-C6H4)	83	2f	74	84

^aMethod A: Swern oxidation; ^bMethod B: DMP oxidation.