Photosensitized O2 enables intermolecular alkene cyclopropanation by active methylene compounds

DP Poudel, A Pokhrel, RK Tak, M Shankar, R Giri - Science, 2023 - science.org
Cyclopropanes are key features in many preclinical, clinical, and commercial drugs, as well
as natural products. The most prolific technique for their synthesis is the metal-catalyzed …

Practical and General Alcohol Deoxygenation Protocol

OP Williams, AF Chmiel, M Mikhael… - Angewandte Chemie …, 2023 - Wiley Online Library
Herein, we describe a practical protocol for the removal of alcohol functional groups through
reductive cleavage of their benzoate ester analogs. This transformation requires a strong …

Photocatalyzed Borylcyclopropanation of Alkenes with a (Diborylmethyl) iodide Reagent

J Hu, M Tang, J Wang, Z Wu… - Angewandte Chemie …, 2023 - Wiley Online Library
Cyclopropane skeletons play a prominent role in the development of organic synthesis and
pharmaceutical chemistry. Herein, we report the design and synthesis of a stable …

Manganese-catalyzed cyclopropanation of allylic alcohols with sulfones

K Yu, Q Nie, Q Chen, W Liu - Nature Communications, 2024 - nature.com
Cyclopropanes are among the most important structural units in natural products,
pharmaceuticals, and agrochemicals. Herein, we report a manganese-catalyzed …

Site‐ and Stereoselective C(sp3)−H Borylation of Strained (Hetero)Cycloalkanols Enabled by Iridium Catalysis

Q Gao, S Xu - Angewandte Chemie International Edition, 2023 - Wiley Online Library
Transition metal‐catalyzed site‐and stereoselective C− H activation of strained (hetero)
cycloalkanes remains a formidable challenge. We herein report a carbamate‐directed …

Generating Fischer-type Rh-carbenes with Rh-carbynoids

E Palomo, AK Sharma, Z Wang, L Jiang… - Journal of the …, 2023 - ACS Publications
We describe the first catalytic generation of Fischer-type acyloxy Rh (II)-carbenes from
carboxylic acids and Rh (II)-carbynoids. This novel class of transient donor/acceptor Rh (II) …

Ti-Catalyzed Modular Ketone Synthesis from Carboxylic Derivatives and gem-Dihaloalkanes

J Ni, X Xia, D Gu, Z Wang - Journal of the American Chemical …, 2023 - ACS Publications
Ketones are ubiquitous in organic synthesis. However, the general method to convert widely
available carboxylic acids, unactivated esters, and amides into ketones remains elusive …

Redox Approaches to Carbene Generation in Catalytic Cyclopropanation Reactions

M Liu, C Uyeda - Angewandte Chemie International Edition, 2024 - Wiley Online Library
Transition metal‐catalyzed carbene transfer reactions have a century‐old history in organic
chemistry and are a primary method for the synthesis of cyclopropanes. Much of the work in …

Organoelectrocatalytic cyclopropanation of alkenyl trifluoroborates with methylene compounds

W Yi, PC Xu, T He, S Shi, S Huang - Nature Communications, 2024 - nature.com
Cyclopropanes are not only privileged motifs in many natural products, agrochemicals, and
pharmaceuticals, but also highly versatile intermediates in synthetic chemistry. As such …

Silver-Catalyzed 1,2-Thiosulfonylation of Alkenes: Development of a Nucleophilic d3-Methylthiolating Reagent

Z Ye, Y Zhang, G Guo, X Shao… - The Journal of Organic …, 2024 - ACS Publications
Development of robust d 3-methylthiolating reagents represents an attractive synthetic
method to access deuterated molecules in the field of drug discovery. Here, we report a …