... JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 22, Issue 49, 1981, Pages 4901–4904. Cover image Cover image. A simple and efficient route to β-substituted pyrroles. ... Dorval, Québec, Canada H9R 4P8. Graham M. Smith. Merck Sharp & Dohme Research Laboratories, PO Box 2000, Rahway, NJ 07065 USA. Received 24 August 1981, Available online 9 March 2001. Abstract. ...