Synthesis 2024; 56(03): 427-434
DOI: 10.1055/a-2204-8461
paper

Metal-Free Synthesis of 9-Sulfenylphenanthrenes via HNO3/HCl-Promoted Annulation of 2-Alkynylbiaryls with Disulfides

Tian Luan
,
,
Zhi-Xiang Yao
,
Hui Su
,
Wan-Guo Yu
This project was financially supported by the National Natural Science Foundation of China (No. 21602036), the Ph.D. Foundation of Guangxi University of Science and Technology (14Z05), the Dean Project of Guangxi Key Laboratory of Green Processing of Sugar Resources (GXTZYZR202204).


Abstract

A metal-free thiolative annulation of 2-alkynylbiaryls with disulfides has been developed. This mild and efficient approach was promoted by inexpensive HNO3/HCl and afforded a range of corresponding 9-sulfenylphenanthrenes in good to excellent yields with a broad substrate scope and high functional group tolerance. Both sulfide groups of the disulfide reagent were used in the reaction.

Supporting Information



Publication History

Received: 26 September 2023

Accepted after revision: 06 November 2023

Accepted Manuscript online:
06 November 2023

Article published online:
11 December 2023

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