synthesis of benzopyrano[2,3-d]pyrimidines using silica-bonded n-propyldiethylenetriamine sulfamic acid (spdtsa) as heterogeneous solid acid catalyst under solvent-free conditions

نویسندگان

khodabakhsh niknam

nassim - borazjani

چکیده

silica-bonded n-propyldiethylenetriamine sulfamic acid (spdtsa) is employed as a recyclable heterogeneous solid acid catalyst for the synthesis of benzopyrano[2,3-d]pyrimidines  through one-pot condensation reaction of salicylaldehydes, malononitrile and secondary amines  at room temperature under solvent-free conditions. spdtsa showed much the same efficiency when used in consecutive reaction runs.

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Synthesis of Benzopyrano[2,3-d]pyrimidines Using Silica-Bonded N-Propyldiethylenetriamine Sulfamic Acid (SPDTSA) As Heterogeneous Solid Acid Catalyst under Solvent-Free Conditions

Silica-bonded N-propyldiethylenetriamine sulfamic acid (SPDTSA) is employed as a recyclable heterogeneous solid acid catalyst for the synthesis of benzopyrano[2,3-d]pyrimidines  through one-pot condensation reaction of salicylaldehydes, malononitrile and secondary amines  at room temperature under solvent-free conditions. SPDTSA showed much the same efficiency when used in con...

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silica-bonded n-propyldiethylenetriamine sulfamic acid as a recyclable solid acid catalyst for the synthesis of coumarin and biscoumarin derivatives

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عنوان ژورنال:
organic chemistry research

ناشر: iranian chemical society

ISSN

دوره 1

شماره 1 2015

کلمات کلیدی
[ ' b e n z o p y r a n o [ 2 ' , 3 , ' d ] p y r i m i d i n e s ' , ' h e t e r o g e n e o u s c a t a l y s t s ' , ' s o l i d a c i d s ' , ' s y n t h e s i s ' , ' s o l v e n t ' , ' f r e e c o n d i t i o n s ' ]

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