4 45 g 0 040 mole of triethylamine was dropped at 20 to 25 u00b0 c in 30 minutes after the completion of dropping the mixture was reacted at 30 u00b0 c for 4 hours the reaction mixture was poured into 1 liter of ion exchanged water the resulting precipitate was filtered and dried to obtain 13 87 g of 1 2 naphthoquinone 2 diazide 6 sulfonic ester of 2 2 bis dihydroxyphenyl propane naphthoquinonediazide compound b synthesis was carried out using the same procedure as in synthesis examples 1 and 2 except that 1 2 naphthoquinone 2 diazide 5 sulfonylchloride was used in place of 1 2 naphthoquinone 2 diazide 6 sulfonylchloride to obtain 1 2 naphthoquinone 2 diazide 5 sulfonic ester of 4 4 39 4 34 trihydroxytriphenylmethane naphthoquinonediazide compound c and 1 2 naphthoquinone 2 diazide 5 sulfonic ester of 2 2 bis 2 4 dihydroxyphenyl propane naphthoquinonediazide compound d m cresol in an amount of 60 g 40 g of p cresol 55 g of 37 by weight formaldehyde aqueous solution and 0 05 g of oxalic acid were charged in a 300 ml three necked flask and reacted with stirring in a 100 u00b0 c oil bath for 5 hours after the.