P(n‐Bu)3Catalyzed Reactions of Salicyl N‐Thiophosphinyl Imines with Allenylphosphonates: Synthesis of Phosphono‐Chromans. (3rd December 2013)

• Record Type: Journal Article
• Authors: Rama Suresh, R.; Prasad Tulichala, R. N.; Kotikalapudi, Ramesh; Kumara Swamy, K. C.
• Is Part Of: Journal of heterocyclic chemistry. Volume 51:Number 3(2014)
• Page Start: 760
• Page End: 767
• Publication Date: 2013-12-03
• Subjects: Heterocyclic compounds -- Periodicals; 547.59
• DOI: 10.1002/jhet.2071
• Languages: English
• ISSNs: 0022-152X

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A phosphine [P(<italic>n</italic>‐Bu)₃]‐catalyzed reaction for the synthesis of phosphono‐chromans from allenylphosphonates and salicyl <italic>N</italic>‐thiophosphinyl imines has been described and compared with reactions for phosphorus‐free allenes. The products are (β, γ)‐cyclized and are obtained in good yields (57–83%). A key product is characterized by X‐ray crystallography.</p> </abstract>