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Abstract One can derive a large class of new N $$ \mathcal{N} $$ = 1 SCFTs by turning on N $$ \mathcal{N} $$ = 1 preserving deformations for N $$ \mathcal{N} $$ = 2 Argyres-Dougals theories. In this work, we use N $$ \mathcal{N} $$ = 2 superconformal indices to get indices of N $$ \mathcal{N} $$ = 1 SCFTs, then use these indices to derive chiral rings of N $$ \mathcal{N} $$ = 1 SCFTs. For a large class of N $$ \mathcal{N} $$ = 2 theories, we find that the IR theory contains only free chirals if we deform the parent N $$ \mathcal{N} $$ = 2 theory using the Coulomb branch operator with smallest scaling dimension. Our results provide interesting lessons on studies of N $$ \mathcal{N} $$ = 1 theories, such as a-maximization, accidental symmetries, chiral ring, etc.