The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The abso...The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The absorption spectrum of the colored metastable form SP3 shows prominent absorption peak at 560nm at 60℃?展开更多
In order to obtain the key intermediate of vandetanib,4-chloro-6-methoxy-7-(1-methylpiperidin-4-ylmethoxy)quinazoline was synthesized from methyl 4-[1-(tert-butoxycarbonyl) piperidin-4-ylmethoxy]-3-methoxybenzoate by ...In order to obtain the key intermediate of vandetanib,4-chloro-6-methoxy-7-(1-methylpiperidin-4-ylmethoxy)quinazoline was synthesized from methyl 4-[1-(tert-butoxycarbonyl) piperidin-4-ylmethoxy]-3-methoxybenzoate by deprotection,methylation,nitration,reduction,ring formation and substitution reaction in an overall yield of 58%.The structures of the compound and its intermediates were determined by 1H NMR and MS.展开更多
文摘The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The absorption spectrum of the colored metastable form SP3 shows prominent absorption peak at 560nm at 60℃?
文摘In order to obtain the key intermediate of vandetanib,4-chloro-6-methoxy-7-(1-methylpiperidin-4-ylmethoxy)quinazoline was synthesized from methyl 4-[1-(tert-butoxycarbonyl) piperidin-4-ylmethoxy]-3-methoxybenzoate by deprotection,methylation,nitration,reduction,ring formation and substitution reaction in an overall yield of 58%.The structures of the compound and its intermediates were determined by 1H NMR and MS.
