Electrophilic aromatic substitution with N-methoxy-N-acylnitrenium ions generated from N-chloro-N-methoxy amides: syntheses of nitrogen heterocyclic compounds bearing a N-methoxy amide group
N‐alkoxy group played important roles in this reaction. First, it removed the requirement for an extra preactivation step prior to nucleophilic addition to activate inert amide carbonyl groups. Second, the N‐alkoxy group formed a five‐membered chelated complex after the firstnucleophilic addition, resulting in suppression of an extra addition of the firstnucleophile. While diisobutylaluminum hydride (DIBAL‐H)
METAL COMPLEX DYE, PHOTOELECTRIC CONVERSION ELEMENT AND DYE-SENSITIZED SOLAR CELL
申请人:Fujifilm Corporation
公开号:US20130087203A1
公开(公告)日:2013-04-11
A metal complex dye, containing a ligand LL1 having a structure represented by Formula (I):
wherein R
1
and R
2
represent a specific substituent; L
1
and L
2
represent a group composed of at least one kind of group selected from the group consisting of an ethenylene group, an ethynylene group and an arylene group, and conjugate with R
1
or R
2
, and the bipyridine; the ethenylene group and the arylene group may be substituted or unsubstituted; R
3
and R
4
represent a substituent; n1 and n2 represent an integer of 0 to 3; A
1
and A
2
represent an acidic group or a salt thereof; and n3 and n4 represent an integer of 0 to 3.
Cross-Dehydrogenative N–N Coupling of Aromatic and Aliphatic Methoxyamides with Benzotriazoles
作者:Pooja Y. Vemuri、Frederic W. Patureau
DOI:10.1021/acs.orglett.1c01034
日期:2021.5.21
are ubiquitous in bioactive compounds and organic materials. However, intermolecular hetero-selective N–H/N–H oxidative coupling reactions remain very challenging and largely unexplored. Here, we report an unprecedented, simple and hetero-selective cross-dehydrogenative N–N coupling of amides and benzotriazoles, utilizing only a hypervalent iodine species as the terminal oxidant. The scope and mechanistic
O-substituted N,N-diacylhydroxylamine bleach activators and compositions employing the same
申请人:The Procter & Gamble Company
公开号:US20010046953A1
公开(公告)日:2001-11-29
N,N diacyl O-substituted imide bleach activators and compositions employing them are provided. The activators have the general formula:
1
wherein X is selected from O, NR
16
and S; e is 0 or 1; f is 0 or 1; R
16
is selected from H and C
1
-C
4
linear or branched, saturated or unsaturated alkyl groups; and R
1
is preferably phenyl or C
7
-C
13
linear or branched chain, saturated or unsaturated alkyl; R
2
is preferably C
1
-C
10
branched or unbranched, saturated or unsaturated alkyl and R
3
is preferably C
1
-C
12
linear or branched chain, saturated or unsaturated alkyl. Bleach additive and bleaching compositions including the bleach activators and methods of cleaning fabrics are also provided.
Imidazoquinoline compounds with an oxime substituent at the 1-position, pharmaceutical compositions containing the compounds, intermediates, and methods of use of these compounds as immunomodulators, for inducing cytokine biosynthesis in animals and in the treatment of diseases including viral and neoplastic diseases are disclosed.