Asymmetric Synthesis of Chiral Aldehydes by Conjugate Additions with Bifunctional Organocatalysis by Cinchona Alkaloids.

Asymmetric Synthesis of Chiral Aldehydes

Asymmetric Synthesis of Chiral Aldehydes by Conjugate Additions with Bifunctional Organocatalysis by Cinchona Alkaloids

✍ Fanghui Wu; Ran Hong; Jihan Khan; Xiaofeng Liu; Li Deng 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 127 KB

The aldehyde is arguably the most versatile carbonyl functionality. Furthermore, it is more active than any other carbonyl functionality toward a plethora of nucleophilic reactions. This unique combination of functional versatility and activity renders chiral aldehydes highly valuable intermediates

Asymmetric Synthesis of Chiral Aldehydes

Asymmetric Synthesis of Chiral Aldehydes by Conjugate Additions with Bifunctional Organocatalysis by Cinchona Alkaloids

✍ Fanghui Wu; Ran Hong; Jihan Khan; Xiaofeng Liu; Li Deng 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 128 KB

The aldehyde is arguably the most versatile carbonyl functionality. Furthermore, it is more active than any other carbonyl functionality toward a plethora of nucleophilic reactions. This unique combination of functional versatility and activity renders chiral aldehydes highly valuable intermediates

Highly Enantioselective 1,4-Michael Addi

Highly Enantioselective 1,4-Michael Additions of Nucleophiles to Unsaturated Aryl Ketones with Organocatalysis by Bifunctional Cinchona Alkaloids

✍ Cristina G. Oliva; Artur M. S. Silva; Diana I. S. P. Resende; Filipe A. A. Paz; 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 396 KB 👁 1 views

## Abstract The development of general and efficient asymmetricorganocatalytic additions of malononitrile and nitromethane to 1,5‐diarylpenta‐2,4‐dien‐1‐ones (cinnamylideneacetophenones) catalyzed by cinchona organocatalysts is reported. The reactions afforded excellent enantioselectivities (up to

Asymmetric Addition of Indoles to Isatin

Asymmetric Addition of Indoles to Isatins Catalysed by Bifunctional Modified Cinchona Alkaloid Catalysts

✍ Pankaj Chauhan; Swapandeep Singh Chimni 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 225 KB

Asymmetric Nitroaldol Reactions of Nitro

Asymmetric Nitroaldol Reactions of Nitroalkanes with Isatins Catalyzed by Bifunctional Cinchona Alkaloid Derivatives

✍ Mei-Qiu Li; Jin-Xin Zhang; Xiao-Fei Huang; Bin Wu; Zhao-Min Liu; Jian Chen; Xian 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 372 KB

ChemInform Abstract: Asymmetric Addition

ChemInform Abstract: Asymmetric Addition of Indoles to Isatins Catalyzed by Bifunctional Modified Cinchona Alkaloid Catalysts.

✍ Pankaj Chauhan; Swapandeep Singh Chimni 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 22 KB 👁 1 views