ChemInform Abstract: Highly Efficient [3 + 2] Reaction of 3-Vinylindoles with 3-Indolylmethanols by Broensted-Acid Catalysis.

ChemInform ◽  
2014 ◽  
Vol 45 (41) ◽  
pp. no-no
Author(s):  
Cheng Zhang ◽  
Lan-Xi Zhang ◽  
Yang Qiu ◽  
Biao Xu ◽  
Yu Zong ◽  
...  
Keyword(s):  
Acid Catalysis ◽  
Highly Efficient

Intramolecular Diels–Alder Reactions of Oxazoles, Imidazoles, and Thiazoles

Synthesis ◽  
2020 ◽  
Author(s):  
Peter Wipf ◽  
Thanh T. Nguyen
Keyword(s):  
Natural Products ◽  
Lewis Acid ◽  
Acid Catalysis ◽  
Copper Catalysts ◽  
Diels Alder ◽  
Synthetic Approach ◽  
Highly Efficient ◽  
Intramolecular Cycloadditions ◽  
Western Segment ◽  
Target Molecules

AbstractThe development of the intramolecular Diels–Alder cycloaddition­ of azole heterocycles, i.e. oxazoles (IMDAO), imidazoles (IMDAI), and thiazoles (IMDAT), has had a significant impact on the efficient preparation of heterocyclic intermediates and natural products. In particular, highly efficient and versatile IMDAO reactions have been utilized as a key step in several synthetic schemes to provide alkaloids and terpenoid target molecules. More limited studies have been performed on IMDAI and IMDAT cycloadditions. Some drawbacks, such as the occasionally­ challenging preparation of IMDA precursors, are also highlighted in this review. Perspectives are provided on how IMDAI and IMDAT­ transformations can be further expanded for target-directed syntheses.1 Introduction2 Oxazoles2.1 IMDAO Approaches to Furanosesquiterpenes and Furanosteroids2.1.1 Syntheses of Highly Oxygenated Sesquiterpenes2.1.2 Syntheses of (±)-Gnididione and (±)-Isognididione2.1.3 Synthesis of (±)-Stemoamide2.1.4 Synthesis of (±)-Paniculide A2.1.5 Syntheses of (+)- and (–)-Norsecurinine2.1.6 Synthesis of Evodone2.1.7 Syntheses of (±)-Ligularone and (±)-Petasalbine2.1.8 Syntheses of Imerubrine, Isoimerubrine, and Grandirubrine2.1.9 Syntheses of Furanosteroids2.1.10 Syntheses of Substituted Indolines and Tetrahydroquinolines2.2 IMDAO Approaches to Pyridines: the Kondrat’eva Reaction2.2.1 Syntheses of Suaveoline and Norsuaveoline2.2.2 Synthesis of Eupolauramine2.2.3 Syntheses of (–)-Plectrodorine and (+)-Oxerine2.2.4 Synthesis of Amphimedine2.2.5 Synthetic Approach to the Western Segment of Haplophytine2.2.6 Synthesis of Marinoquinoline A2.2.6.1 IMDAO Approach to Marinoquinoline A2.2.6.2 Scope of Allenyl IMDAO Cycloaddition2.3 Lewis Acid Catalysis in IMDAO Reactions2.3.1 Effects of Europium Catalysts on IMDAO Reactions2.3.2 Effects of Copper Catalysts on IMDAO Reactions3 Imidazoles 4 Thiazoles4.1 Syntheses of Menthane and Eremophilane4.2 Further Comments on the Intramolecular Cycloadditions of Thiocarbonyl Ylides5 Conclusions and Outlook

Highly Efficient Direct Allylation of Oxindoles with Simple Allylic Alcohols Enabled by Palladium/Brønsted Acid Catalysis

Synlett ◽  
2014 ◽  
Vol 25 (15) ◽  
pp. 2149-2254 ◽  
Author(s):  
Gaoxi Jiang ◽  
Huameng Yang ◽  
Hui Zhou ◽  
Hongyu Yin ◽  
Chungu Xia
Keyword(s):  
Acid Catalysis ◽  
Allylic Alcohols ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Highly Efficient ◽  
Brönsted Acid ◽  
Bronsted Acid Catalysis

scholarly journals A Highly Efficient Glycosidation of Glycosyl Chlorides by Using Cooperative Silver(I) Oxide–Triflic Acid Catalysis

2020 ◽  
Vol 26 (36) ◽  
pp. 8053-8063 ◽  
Author(s):  
Scott A. Geringer ◽  
Yashapal Singh ◽  
Daniel J. Hoard ◽  
Alexei V. Demchenko
Keyword(s):  
Acid Catalysis ◽  
Triflic Acid ◽  
Highly Efficient

ChemInform Abstract: Highly Efficient Direct Allylation of Oxindoles with Simple Allylic Alcohols Enabled by Palladium/Broensted Acid Catalysis.

ChemInform ◽  
2015 ◽  
Vol 46 (10) ◽  
pp. no-no
Author(s):  
Huameng Yang ◽  
Hui Zhou ◽  
Hongyu Yin ◽  
Chungu Xia ◽  
Gaoxi Jiang
Keyword(s):  
Acid Catalysis ◽  
Allylic Alcohols ◽  
Highly Efficient

Highly Efficient Asymmetric Lewis Acid Catalysis with Platinum Group Complexes of Conformationally Flexible 1,3-Butadiene-Bridged Diphosphines, NUPHOS

2003 ◽  
Vol 5 (21) ◽  
pp. 3863-3866 ◽  
Author(s):  
Simon Doherty ◽  
Colin R. Newman ◽  
Rakesh K. Rath ◽  
He-Kuan Luo ◽  
Mark Nieuwenhuyzen ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Acid Catalysis ◽  
Lewis Acid Catalysis ◽  
Highly Efficient ◽  
Platinum Group

Highly efficient [3 + 2] reaction of 3-vinylindoles with 3-indolylmethanols by Brønsted-acid catalysis

RSC Advances ◽  
2014 ◽  
Vol 4 (14) ◽  
pp. 6916 ◽  
Author(s):  
Cheng Zhang ◽  
Lan-Xi Zhang ◽  
Yang Qiu ◽  
Biao Xu ◽  
Yu Zong ◽  
...  
Keyword(s):  
Acid Catalysis ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Highly Efficient ◽  
Brönsted Acid ◽  
Bronsted Acid Catalysis

scholarly journals Highly Efficient Asymmetric Lewis Acid Catalysis with Platinum Group Complexes of Conformationally Flexible, 1,3-Butadiene-Bridged Diphosphines, NUPHOS.

ChemInform ◽  
2004 ◽  
Vol 35 (7) ◽  
Author(s):  
Simon Doherty ◽  
Colin R. Newman ◽  
Rakesh K. Rath ◽  
He-Kuan Luo ◽  
Mark Nieuwenhuyzen ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Acid Catalysis ◽  
Lewis Acid Catalysis ◽  
Highly Efficient ◽  
Platinum Group

Highly efficient and selective photocatalytic CO2 to CO conversion in aqueous solution

2020 ◽  
Vol 56 (27) ◽  
pp. 3851-3854 ◽  
Author(s):  
Xiaomin Chai ◽  
Hai-Hua Huang ◽  
Huiping Liu ◽  
Zhuofeng Ke ◽  
Wen-Wen Yong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Performance ◽  
Aqueous Media ◽  
Highly Efficient ◽  
Co Conversion

A Co-based complex displayed the highest photocatalytic performance for CO2 to CO conversion in aqueous media.

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