1229593-45-6Relevant articles and documents
Reaction of dialkyl 2-butynoate with aniline and formaldehyde: revision of the structure of the product
Srikrishna,Sridharan,Prasad
, p. 3651 - 3654 (2010)
Dimethyl 3-(aryl)-3,6-dihydro-2H-1,3-oxazine-4,5-dicarboxylate structure assigned for the products obtained in the Bronsted acid catalyzed reaction of dimethyl but-2-ynoates with anilines and an excess of formaldehyde in methanol has been revised to methy
Nano-MoO3 as a highly efficient heterogeneous catalyst for a one-pot synthesis of tetrahydropyrimidine derivatives in water
Zarenezhad, Elham,Rad, Mohammad Navid Soltani,Mosslemin, Mohammad Hossein,Tabatabaee, Masoumeh,Behrouz, Somayeh
, p. 607 - 610 (2015/01/09)
A green and highly efficient one-pot synthesis of 16 1,3,4,5-tetrasubstituted 1,2,3,6-tetrahydropyrimidines, four of which are new, using a three-component reaction involving an aniline, formaldehyde and a dialkyl acetylenedicarboxylate in aqueous media at room temperature catalysed by nano-MoO3 has been achieved.
Green synthesis of tetrahydropyrimidine analogues and evaluation of their antimicrobial activity
Darandale, Sunil N.,Pansare, Dattatraya N.,Mulla, Nayeem A.,Shinde, Devanand B.
supporting information, p. 2632 - 2635 (2013/07/31)
It is the first report of 1,3,4,5-tetrasubstituted 1,2,3,6- tetrahydropyrimidines derivatives, catalyzed by ZrOCl2. The mild reaction conditions, excellent yields in shorter reaction time and evasion of cumbersome workup procedures make this pr
Efficient synthesis of tetrahydropyrimidines and pyrrolidines by a multicomponent reaction of dialkyl acetylenedicarboxylates (=dialkyl but-2-ynedioates), amines, and formaldehyde in the presence of iodine as a catalyst
Das, Biswanath,Kanth, Boddu Shashi,Shinde, Digambar Balaji,Kamble, Vinod T.
experimental part, p. 2087 - 2091 (2012/01/04)
Iodine was explored as an efficient catalyst for the synthesis of tetrahydropyrimidines 4 and pyrrolidines 5 by a multicomponent reaction of dialkyl acetylenedicarboxylates (=dialkyl but-2-ynedioates) 1, amines 2, and HCHO 3 at room temperature (Scheme).
An efficient multicomponent synthesis of polysubstituted pyrrolidines and tetrahydropyrimidines starting directly from nitro compounds in water
Das, Biswanath,Shinde, Digambar Balaji,Kanth, Boddu Shashi,Satyalakshmi, Gandham
experimental part, p. 2823 - 2827 (2010/10/05)
A distinct approach for the synthesis of 1,3,3-trisubstituted 4,5-dioxopyrrolidines and 1,3,4,5-tetrasubstituted 1,2,3,6-tetrahydropyrimidines has been discovered, in the form of a three-component reaction of nitroarenes, formaldehyde, and dialkyl acetylenedicarboxylates using indium in dilute aqueous HCl at room temperature. The molar ratios of these substrates are 1:1:4 and 2:1:4 for the preparation of dioxopyrrolidines and tetrahydropyrimidines, respectively. The reactions involve the reduction of nitro compounds to amines, which are simultaneously attacked by dialkyl acetylenedicarboxylates and formaldehyde. The products are formed in good to high yields. Georg Thieme Verlag Stuttgart.