REGIOSELECTIVE ANNULATION OF 5-(1-ALKENYL)- AND 5-VINYL-1,3-BENZODIOXOLES WITH 3-CHLORO-3-CYCLOBUTENE-1,2-DIONE - SYNTHESIS OF YCLOBUTA[5,6]NAPHTHO[2,3-D][1,3]DIOXOLE-1,2-DIONES AND YCLOBUTA[5,6]NAPHTHO[2,3-D][1,3]DIOXOLE-1,2-DIONES