“…Tris(dibenzylideneacetone)dipalladium (0) (Pd 2 (dba) 3 ), palladium (II) acetate (Pd(OAc) 2 ), tetrakis(acetonitrile)palladium(II) tetrafluoroborate ((MeCN) 4 Pd(BF 4 ) 2 ), 9,9-dimethyl-4,5-bis (diphenylphosphino)xanthene (XANTPhos), alpha, alpha'-bis(di-tert-butylphosphino)-ortho-xylene (97+%) (DtBPX), tricyclohexylphosphine (97+%) (PCy 3 ), and 1,4-bis(diphenylphosphino)butane (dppb) were purchased from Strem and used as received. 2-Methylvalerolactone [53][54][55] and 2-ethylbutyrolactone [56] were synthesized according to literature procedures.…”