Reaction of pyridinium phenacylides with cyclopentadienone derivatives gave bicyclo[3.1.0]hex-3-en-2-one derivatives by the nucleophilic additionreaction followed by pyridine elimination. Isoquinolinium phenacylide underwent the 1,3-dipolar cycloadditionreaction with a cyclopentadienone.
The reaction between 7-oxanorbornadienes and tetraarylcyclopentadienones: a short synthesis of 1,2,3,4-tetraarylbenzenes
作者:Albert J. Fry、Laura R. Sherman、Alessandrina R. Beaulieu、Carol Sherwin
DOI:10.1021/jo00288a078
日期:1990.1
Photoisomerisation of bicyclo[4.2.0]octadienes to tricyclo[4.2.0.02,5] octenes: Application to the synthesis of [n]ladderanes
作者:Ronald N. Warrener、Ian G. Pitt、Eric E. Nunn、Colin H.L. Kennard
DOI:10.1016/s0040-4039(00)75854-0
日期:1994.1
A new approach for the extension of [n]adderanes is described which involves formation of an end-fused bicyclo[4.2.0]octadiene and its photoisomerisation to the related tricyclo[4.2.0.0(2,5)] octene as the ladderane extension step. The protocol is illustrated with the synthesis of [3]ladderane (9) from an unsubstituted cyclobutene and nor[5]ladderane (13) from an ester activated cyclobutene. The exo-stereochemistry of (13) is confirmed by reference to intermediate (23) for which a single crystal X-Ray structure analysis was obtained.
YAMASHITA Y.; MASUMURA M., TETRAHEDRON LETT., 1979, NO 20, 1765-1768
作者:YAMASHITA Y.、 MASUMURA M.
DOI:——
日期:——
FRY, ALBERT J.;SHERMAN, LAURA R.;BEAULIEU, ALESSANDRINA R.;SHERWIN, CAROL, J. ORG. CHEM., 55,(1990) N, C. 389-391
作者:FRY, ALBERT J.、SHERMAN, LAURA R.、BEAULIEU, ALESSANDRINA R.、SHERWIN, CAROL