wherein Ar represents a 4-OP substituted phenyl or naphtyl (P being a protecting group) which may be further substituted, and Ar' a possibly substituted phenyl or naphtyl rest, R is hydrogen, an alkali metal or a carbonyl residue, and X represents the atoms to complete a 2,3-dihydrobenz(d) isothiazole-1,1-dioxide or a 2,3-dihydronaphto (1,8-d,e) 1,2-thiazine-1,1-dioxide ring, which are useful intermediates in the synthesis of certain derivatives of formula (1) wherein Ar represents a possibly further substituted 4-OH phenyl or naphtyl rest.;The product produced are useful, for example, as photographic optical filter agents and filter agent precursors."/>
Substituted 2,3-dihydrobenz-(d)-isothiazole-1,1-dioxides and 2,3-dihydronaphtho-(1,8-de)-1,2-thiazine-1,1-dioxides
Compound of formulawherein Ar represents a 4-OP substituted phenyl or naphtyl (P being a protecting group) which may be further substituted, and Ar' a possibly substituted phenyl or naphtyl rest, R is hydrogen, an alkali metal or a carbonyl residue, and X represents the atoms to complete a 2,3-dihydrobenz(d) isothiazole-1,1-dioxide or a 2,3-dihydronaphto (1,8-d,e) 1,2-thiazine-1,1-dioxide ring, which are useful intermediates in the synthesis of certain derivatives of formula (1) wherein Ar represents a possibly further substituted 4-OH phenyl or naphtyl rest.;The product produced are useful, for example, as photographic optical filter agents and filter agent precursors.
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机译：式的化合物 <图像文件=“ IMGA0001.GIF” he =“ 15” id =“ ia01” imgContent =“ chem” imgFormat =“ GIF” inline =“ no” wi =“ 49” /> < [化学式]其中Ar表示可以被进一步取代的4-OP取代的苯基或萘基（P为保护基），并且Ar'为可能取代的苯基或萘基，R为氢，碱金属或羰基残基， X表示完成2,3-二氢苯并（d）异噻唑-1,1-二氧化物或2,3-二氢萘酚（1,8-d，e）1,2-噻嗪-1,1-二氧化物的原子环，在某些式（1）的衍生物的合成中是有用的中间体，其中Ar表示可能还被取代的4-OH苯基或萘基残基。;产生的产物例如用作照相光学滤光剂和滤光剂前体。
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