Cycloaddition reactions of 4-phenyl-3H-1,2,4-triazole-3,5(4H)-dione (PTAD) and 4-methyl-3H-1,2,4-triazole-3,5(4H)-dione (MTAD): A short review
نویسندگان
چکیده
منابع مشابه
4-Hydrazinylidene-1-methyl-3H-2λ6,1-benzothiazine-2,2-dione
In the title compound, C(9)H(11)N(3)O(2)S, the thia-zine ring adopts a half-chair conformation. In the crystal structure N-H⋯N hydrogen bonds connect two mol-ecules into a centrosymmetric dimer, forming an R(2) (2)(6) ring motif. These dimers are further connected into chains by N-H⋯O and C-H⋯O hydrogen bonds.
متن کامل4-Methyl-2H-1,3-oxazine-2,6(3H)-dione
In the title compound, C(5)H(5)NO(3), the planar (maximum deviation = 0.075 Å for the ring O atom) mol-ecules form N-H⋯O hydrogen bonds in a zigzag chain (C-O⋯N bond angle ≃ 140°) between glide-related mol-ecules.
متن کامل4-(4-Methoxyphenyl)-1-phenylpyridine-2,6(1H,3H)-dione
In the title compound, C(18)H(15)NO(3), the pyridine-2,6-dione ring adopts an envelope conformation. The phenyl ring lies approximately perpendicular to the mean plane of the pyridine-2,6-dione ring [dihedral angle = 81.5 (1)°], while the methoxy-phenyl ring is tilted to the same plane by a dihedral angle of 34.8 (1)°. Inter-molecular C-H⋯O inter-actions link the mol-ecules into chains along [1...
متن کامل6-Bromo-1-methyl-4-[2-(4-methylbenzylidene)hydrazinylidene]-3H-2λ6,1-benzothiazine-2,2-dione
In the title compound, C(17)H(16)BrN(3)O(2)S, the two fused rings are twisted by a dihedral angle of 6.61 (15)°. The thia-zine ring adopts a sofa conformation. The toluene ring is oriented at dihedral angles of 15.5 (2) and 20.6 (2)° with respect to the bromo-benzene and thia-zine rings, respectively. The benzyl-idene system is approximately planar [r.m.s. deviation = 0.0388 Å]. In the cyrstal,...
متن کامل1,3-Bis(4-tert-butylbenzyl)pyrimidine-2,4(1H,3H)-dione
In the crystal structure of the title mol-ecule, C(26)H(32)N(2)O(2), the six methyl groups are disordered over two positions, with site-occupancy ratios of 0.665 (8):0.335 (8) and 0.639 (8):0.361 (8). The central pyrimidine ring is almost planar with an r.m.s. deviation of 0.009 Å. The dihedral angles formed by the two benzene rings with the pyrimidine ring are 70.70 (8) and 88.02 (9)°. The dih...
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ژورنال
عنوان ژورنال: Organic Communications
سال: 2020
ISSN: 1307-6175
DOI: 10.25135/acg.oc.88.20.11.1870