Synthesis of 1,2,3,5-oxathiadiazole 2-oxides from amidoximes and thionyl chloride and the mechanism of their thermally induced fragmentation and rearrangement to carbodiimides
Catalyst free C–N bond formation by the reaction of amines with diimides: bulky guanidines
作者:Ashim Baishya、Thota Peddarao、Milan Kr. Barman、Sharanappa Nembenna
DOI:10.1039/c5nj01612f
日期:——
Catalyst free direct addition of cyclic secondary amines to variousN,N′-bisaryl substituted carbodiimides led to the formation of bulky guanidines. Furthermore, two equivalents ofN,N′-bisaryl substituted carbodiimides upon treatment with piperazine led to the formation of bis guanidines.
Rhodium(I) Complexes of
<i>N</i>
‐Aryl‐Substituted Mono‐ and Bis(amidinates) Derived from Their Alkali Metal Salts
作者:Eric M. B. Moos、Sandra González‐Gallardo、Michael Radius、Frank Breher
DOI:10.1002/ejic.201800349
日期:2018.7.13
The synthesis and characterization of several rhodium(I) complexes of amidinate and linker‐bridged bis(amidinate) ligands are presented. The amidinate ligands for the mononuclear complexes CH3C(NMes)2Rh(cod)} (1), CH3C(NDipp)2Rh(cod)} (2), and HCCC(NDipp)2Rh(cod)} (3) (cod = 1,5‐cyclooctadiene) were synthesized by reacting the corresponding organometallic precursor [Rh(cod)Cl]2 with the alkali metal
本文介绍了several酰胺和连接桥联双(ami酰胺)配体的几种铑(I)配合物的合成和表征。单核络合物CH 3 C(NMes)2 Rh(cod)}(1),CH 3 C(NDipp)2 Rh(cod)}(2)和HCC C(NDipp)2 Rh (cod)}(3)(cod = 1,5-环辛二烯)是通过使相应的有机金属前体[Rh(cod)Cl] 2与碱金属a酰胺CH 3 C(NR)2 Li} L1Li(R = Mes = 2,4,6-Me 3 C 6 H 2)和L2Li(R = Dipp = 2,6‐ i Pr 2 C 6 H 3)。类似地,可以将炔基官能化的sodium化钠(HCC C(NDipp)2 Na} · 2DME,L3Na)进一步去质子化,并与碳二亚胺反应形成炔桥双(酰胺基)CC C(NDipp)2 Na( thf)} 2(L4Na),其用作合成CC C(NDipp)2
Conjugated Bis‐Guanidines (CBGs) as
<i>β</i>
‐Diketimine Analogues: Synthesis, Characterization of CBGs/Their Lithium Salts and CBG Li Catalyzed Addition of B−H and TMSCN to Carbonyls
ratio in toluene yielded sandwich lithium complex [4Li] (12). All new CBGs 1–4 and lithium salts of CBG, 5, 8, and 12 were characterized by single-crystal X-ray structural analysis. The compounds 5–12 were characterized by multinuclear magnetic resonance spectroscopy. Moreover, we have investigated the catalytic application of lithium salts of CBGs for the addition of B−H and TMSCN to carbonyls.
在本文中,我们报道了一系列共轭双胍(CBGs)L [L = (ArHN)(ArHN)C = NC =(NAr)(NHAr)};Ar = 2,6-Me 2 -C 6 H 3,(1),2,4,4,6-Me 3 -C 6 H 2,(2),2,6-Et 2 -C 6 H 3,(3),2,6- i Pr 2 -C 6 H 3,(4)]。通过N,N'-二芳基碳二亚胺与NaHCO 3水溶液之间的反应可以容易地获得这些化合物。乙腈中的氨。1与n的质子化-BuLi以1:1的比例在THF中形成四配位的锂络合物[ 1 Li⋅(THF)2 ](5),而在相同的反应条件下,配体3和4生成了三个配位的锂络合物, [ 3 Li⋅THF](6)和[ 4Li ⋅THF](7)表示。但是,化合物1和4在n- BuLi在乙醚中进行质子化处理后,允许[ 1 Li·Et 2 O](8)和[ 4 Li·Et 2 O](9),而在甲
Metal-free access of bulky N,N′-diarylcarbodiimides and their reduction: bulky N,N′-diarylformamidines
作者:Thota Peddarao、Ashim Baishya、Milan Kr. Barman、Ajay Kumar、Sharanappa Nembenna
DOI:10.1039/c6nj00907g
日期:——
N′-diarylcarbodiimide has been reported using toxic metal oxide (HgO) and magnesium sulphate (MgSO4) under harsh reactionconditions. Furthermore, easy access to 1,3-disubstituted symmetric and unsymmetrical N,N′-diaryl formamidines involving the reaction of symmetrical and unsymmetrical N,N′-diaryl carbodiimides with sodium borohydride is described. The widely used method for the preparation of bulky N,N′-diaryl
ACID-RESISTANT BASE AND/OR RADICAL GENERATOR, AND CURABLE RESIN COMPOSITION CONTAINING SAID BASE AND/OR RADICAL GENERATOR
申请人:WAKO PURE CHEMICAL INDUSTRIES, LTD.
公开号:US20190002403A1
公开(公告)日:2019-01-03
The present invention relates to a compound represented by the general formula (A), a base- and/or radical-generating agent comprising the compound, and so on.
In the formula, four pieces of R
1
each independently represents a hydrogen atom or a fluorine atom; four pieces of R
2
each independently represent a fluorine atom or a trifluoromethyl group; R
3
, R
6
, R
7
and R
10
each independently represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; R
4
and R
5
each independently represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, or R
4
and R
5
are bonded to each other to represent an alkylene group having 2 to 4 carbon atoms; and R
8
and R
9
each independently represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an aryl group having 6 to 14 carbon atoms and optionally having a substituent selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkylthio group having 1 to 6 carbon atoms, a dialkylamino group having 2 to 12 carbon atoms, a halogen atom, and a nitro group, or R
8
and R
9
are bonded to each other to represent an alkylene group having 2 to 4 carbon atoms; provided that two or three of the eight groups R
3
to R
10
are each a hydrogen atom, and, in a case where two of the eight groups are each a hydrogen atom, then three to six of the remaining groups are each an alkyl group having 1 to 12 carbon atoms, and, in a case where three of the eight groups are each a hydrogen atom, then four or five of the remaining groups are each an alkyl group having 1 to 12 carbon atoms.