New biheterocyclic spiro system — Spiro-[1,4-benzodioxin-2 (3H),2′(3′H)-benzothiazole]
A convenient preparative method has been developed for obtaining 3′-methylspiro[1,4-benzodioxin-2 (3H),2′(3′H)-benzothiazole], the first representative of biheterocyclic spiro compounds of a new type.