TABLE 2.

Depolymerization of PET wastes by different β-hydroxyamines.

Entry	β-hydroxy amine	Terephthalamide diol	Yield of 6a-f’ (%) a	PET conversion (%) b
1	4a	6a	89	89
2	4b	6b	80	85
3	4c	6c	62	75
4	4d	6d	90	97
5	4e’	6e’	98	98
6	4f’	6f’	35	98

^a The yield of compound 6 was calculated according to the equation reported by Demarteau et al. (2020).

^b PET conversion was calculated according to the equation reported by Karayannidis et al. (2002).