Atom-efficient synthesis of 2,4,6-trisubstituted 1,3,5-triazines <i>via</i> Fe-catalyzed cyclization of aldehydes with NH<sub>4</sub>I as the sole nitrogen source
作者:Jiang Xiao、Shuang Ren、Qiang Liu
DOI:10.1039/d0ra03323e
日期:——
An atom-efficient, straightforward method for the synthesis of 2,4,6-triaryl-1,3,5-triazines via iron-catalyzed cyclization of aldehydes with NH4I as the sole nitrogen source is demonstrated. This strategy works smoothly under air atmosphere, and affords symmetrical 2,4,6-trisubstituted and unsymmetrical 1,3,5-triazines with yields from 18% to 72%. Compared to other methods, the present protocol provides
Domino reactions between 1,1-dilithio-3,3-diphenylallene and nitriles resulted in the formation of products containing up to four nitrile molecules, representing the highest number to date of nitrile molecules involved in the formation of unambiguously characterized oligomers. The unusual domino process reported constitutes a new method for the synthesis of imidazoles. The solid-state structures of
A composition comprising a compound represented by the following formula (1):
wherein Ar represents an aryl group or a mono-valent heterocyclic group.)
or a compound having a residue of a compound represented by the above-described formula (1), and
a compound represented by the following formula (2):
wherein one member of Z
1
to Z
3
represents —N═ and two remainders thereof each represent —C(R′)═; Z
4
and Z
5
each represent —C(R′)═; one member of Z
6
to Z
8
represents —N═ and two remainders thereof each represent —C(R′)═; Z
9
and Z
10
each represent —C(R′)═; R′ represents a substituent such as a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group and the like.
or a compound having a residue of a compound represented by the above-described formula (2).
Embodiments described herein generally relate to: sensing and/or authentication using luminescence imaging; diagnostic assays, systems, and related methods; temporal thermal sensing and related methods; and/or to emissive species, such as those excitable by white light, and related systems and methods.