Results 1 to 10 of about 2,226,317 (267)

Construction of highly enantioenriched spirocyclopentaneoxindoles containing four consecutive stereocenters via thiourea-catalyzed asymmetric Michael–Henry cascade reactions

Beilstein Journal of Organic Chemistry, 2017
The thiourea-catalyzed asymmetric synthesis of highly enantioenriched spirocyclopentaneoxindoles containing chiral amide functional groups using simple 3-substituted oxindoles and nitrovinylacetamide as starting materials was achieved successfully.
Yonglei Du, Jian Li, Kerong Chen, Chenglin Wu, Yu Zhou, Hong Liu   +5 more
doaj   +1 more source

Synthesis of α-amino amidines through molecular iodine-catalyzed three-component coupling of isocyanides, aldehydes and amines

Beilstein Journal of Organic Chemistry, 2014
A facile and efficient synthetic protocol for the synthesis of α-amino amidines has been developed using a molecular iodine-catalyzed three-component coupling reaction of isocyanides, amines, and aldehydes. The presented strategy offers the advantages of
Praveen Reddy Adiyala, D. Chandrasekhar, Jeevak Sopanrao Kapure, Chada Narsimha Reddy, Ram Awatar Maurya   +4 more
doaj   +1 more source

Photo-enabled and thioamide-directed α-C(sp3)–H carboxylation of α-substituted benzylamines with CO2 towards α-tertiary amino acids

Nature Communications
α-Tertiary amino acids (ATAAs) are biologically important molecules that have attracted sustained synthetic interest. However, developing expedient methods for their construction that feature high atom economy and avoid tedious substrate pre ...
Jie Xu, Chang Liu, Chao-Yi Liu, Miao Peng, Yan Zhang, Ding-Hai Wang, Heng Jiang   +6 more
doaj   +1 more source

One-pot Ugi-azide and Heck reactions for the synthesis of heterocyclic systems containing tetrazole and 1,2,3,4-tetrahydroisoquinoline

Beilstein Journal of Organic Chemistry
A new method for the synthesis of heterocyclic systems containing tetrazole and tetrahydroisoquinoline is developed via the performance of one-pot Ugi-azide and Heck cyclization reactions.
Jiawei Niu, Yuhui Wang, Shenghu Yan, Yue Zhang, Xiaoming Ma, Qiang Zhang, Wei Zhang   +6 more
doaj   +1 more source

TBAB-catalyzed 1,6-conjugate diazotization of para-quinone methides: A very effective access to polysubstituted α-diazocarbonyl compounds

Journal of Saudi Chemical Society
A highly efficient diazotization of diazoacetates with para-quinone methides has been established via a tetrabutyl ammonium bromide (TBAB)-catalyzed 1,6-conjugated addition pathway. This methodology affords a convenient, safe, and rapid way to generating
Zhang-Qin Liu, Sheng-Shu Liu, Xiao-Yu Guan   +2 more
doaj   +1 more source

Versatile Method for the Simultaneous Synthesis of Two Ionic Liquids, Otherwise Difficult to Obtain, with High Atom Economy. [PDF]

ChemistryOpen, 2019
Szpecht A, Zajac A, Zielinski D, Maciejewski H, Smiglak M.   +4 more
europepmc   +1 more source

Atom-economy upcycling of commodity thermoset polyurethane into photocuring 3D printing resins based on selective cleavage-crosslink strategy. [PDF]

Nat Commun
Huang Y, Guo X, Deng Y, Ye S, Zhu Y, Liu Z, Chen J, Zhu Y.   +7 more
europepmc   +1 more source

Sustainable chemical technology: Core concepts, key subfields, and assessment approaches. [PDF]

Biodes Res
Hartyányi M, Nagy R.
europepmc   +1 more source

Synthesis with perfect atom economy: generation of furan derivatives by 1,3-dipolar cycloaddition of acetylenedicarboxylates at cyclooctynes. [PDF]

Molecules, 2014
Banert K, Bochmann S, Ihle A, Plefka O, Taubert F, Walther T, Korb M, Rüffer T, Lang H.   +8 more
europepmc   +1 more source

Recent Breakthroughs in Cyclizations of <i>Ortho</i>-Quinone Methides. [PDF]

Molecules
Wang D, Guo J, Tan L, Qiu L, Reddy CVS, Xia W.   +5 more
europepmc   +1 more source