ChemInform Abstract: Efficient Synthesis of Chiral Cyclic Acetals by Metal and Broensted Acid Co-Catalyzed Enantioselective Four-Component Cascade Reactions.

ChemInform ◽  
2014 ◽  
Vol 45 (20) ◽  
pp. no-no
Author(s):  
Lin Qiu ◽  
Xin Guo ◽  
Chaoqun Ma ◽  
Huang Qiu ◽  
Shunying Liu ◽  
...  
Keyword(s):  
Cascade Reactions ◽  
Efficient Synthesis ◽  
Cyclic Acetals

Efficient synthesis of chiral cyclic acetals by metal and Brønsted acid co-catalyzed enantioselective four-component cascade reactions

2014 ◽  
Vol 50 (17) ◽  
pp. 2196-2198 ◽  
Author(s):  
Lin Qiu ◽  
Xin Guo ◽  
Chaoqun Ma ◽  
Huang Qiu ◽  
Shunying Liu ◽  
...  
Keyword(s):  
Michael Addition ◽  
Cascade Reactions ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Efficient Synthesis ◽  
Mannich Reactions ◽  
Cyclic Acetals ◽  
Brönsted Acid

Four-component Mannich reactions subsequently followed by an intramolecular oxo-Michael addition were developed to efficiently produce chiral cyclic acetals with high diastereoselectivity and enantioselectivity.

Efficient Synthesis of Eight-Membered Nitrogen Heterocycles fromO-Propargylic Oximes by Rhodium-Catalyzed Cascade Reactions

2014 ◽  
Vol 20 (33) ◽  
pp. 10214-10219 ◽  
Author(s):  
Itaru Nakamura ◽  
Yoshinori Sato ◽  
Keisuke Takeda ◽  
Masahiro Terada
Keyword(s):  
Nitrogen Heterocycles ◽  
Cascade Reactions ◽  
Efficient Synthesis

Synthesis of the aglycon of aspafiliosides E and F based on cascade reactions

2016 ◽  
Vol 52 (9) ◽  
pp. 1942-1944 ◽  
Author(s):  
Jing-Jing Wu ◽  
Yong Shi ◽  
Wei-Sheng Tian
Keyword(s):  
Cascade Reactions ◽  
Efficient Synthesis ◽  
Cascade Processes

Herein, we describe an efficient synthesis of C17α-OH-tigogenin, which is the aglycon of aspafiliosides E and F. The synthesis features three cascade processes, which involve the iodo-lactonization of furostan-26-acid, a cascade hydrolysis/intramolecular SN2 process, and a cascade intramolecular redox-ketalization process.

ChemInform Abstract: Facile and Efficient Synthesis of Hydroxyalkyl Esters from Cyclic Acetals Through Aerobic Photo-Oxidation Using Anthraquinone-2-carboxylic Acid.

ChemInform ◽  
2015 ◽  
Vol 46 (30) ◽  
pp. no-no
Author(s):  
Tomoaki Yamaguchi ◽  
Yasuhisa Kudo ◽  
Shin-ichi Hirashima ◽  
Eiji Yamaguchi ◽  
Norihiro Tada ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Efficient Synthesis ◽  
Cyclic Acetals ◽  
Photo Oxidation

C(sp3)–H dehydrogenation and C(sp2)–H alkoxy carbonylation of inactivated cyclic amines towards functionalized N-heterocycles

2017 ◽  
Vol 53 (28) ◽  
pp. 4002-4005 ◽  
Author(s):  
Yan He ◽  
Fang Wang ◽  
Xinying Zhang ◽  
Xuesen Fan
Keyword(s):  
Cascade Reactions ◽  
Efficient Synthesis ◽  
Cyclic Amines

A novel and efficient synthesis of tetrahydropyridine-, dihydropyrrole-, and tetrahydroazepine-3-carboxylates via cascade reactions of cyclic amines with CO and alcohols is presented. To our knowledge, this should be the first example in which functionalized N-heterocycles were prepared through Pd-catalyzed C(sp3)–H dehydrogenation and C(sp2)–H carbonylation of cyclic amines.

ChemInform Abstract: Highly Diastereoselective Multicomponent Cascade Reactions: Efficient Synthesis of Functionalized 1-Indanols.

ChemInform ◽  
2013 ◽  
Vol 44 (23) ◽  
pp. no-no
Author(s):  
Jun Jiang ◽  
Xiaoyu Guan ◽  
Shunying Liu ◽  
Baiyan Ren ◽  
Xiaochu Ma ◽  
...  
Keyword(s):  
Cascade Reactions ◽  
Efficient Synthesis

Synthesis of di(hetero)aryl sulfides by defluorinative sulfenylation of polyfluoroalkyl ketones with sodium sulfinates or arylsulfonyl chlorides

2020 ◽  
Vol 56 (61) ◽  
pp. 8699-8702
Author(s):  
Xue-Qiang Chu ◽  
Ting Xie ◽  
Ya-Wen Wang ◽  
Xiang-Rui Li ◽  
Weidong Rao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Cascade Reactions ◽  
Efficient Synthesis ◽  
Metal Free ◽  
Aryl Sulfides ◽  
Aryl Sulfide

Cascade reactions of α-perfluoroalkyl ketones with sodium sulfinates or arylsulfonyl chlorides that allowed the efficient synthesis of fluoroalkylated di(hetero)aryl sulfide derivatives under transition metal-free conditions were developed.

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