1. A process for producing long chain dibasic acid of formula (V) and long chain amino acid of formula (VI), comprising:(1) reacting a keto fatty acid (II) of the formula:
in the presence or absence of a solvent with an aqueous solution of hydroxylamine salt or subjecting a keto fatty acid (II) to an ammoximation reaction to produce an oxime fatty acid (III) of the formula:
wherein m is an integer from 0 to 10; n is an integer from 6 to 20;
(2) subjecting the oxime fatty acid (III) to the Beckmann rearrangement to yield a mixture of the amide fatty acid (IVa) and (IVb)
(3) hydrolyzing the mixed amide fatty acids with an acid or a basic agent to a mixture of a long chain dibasic acid (V), a long chain amino acid (VI), a short chain alkylamine (VIII), and an alkanoic acid (VIII)
and(4) separating the long chain amino acid (VI), long chain dibasic acid (V), and alkanoic acid (VIII) by a step-wise neutralization or acidification.