(The Robert Robinson Laboratories, University of Liverpool, PO Box 147, Liverpool L69 3BX and TDepartment of Chemistry, Imperial College, London SW7 2AY) ... Summary 3-Methoxy-3a-methyl-3aH-indene (4) has been synthesised and is isolated as an unstable, readily oxidised oil, which undergoes [8 + 2lcycloaddition with 4-phenyltriazoline-3,5-dione and with dimethyl acetylene- dicarboxylate. ... THE isomer of indene with the tetrahedral carbon ...
