申请人:Dow Global Technologies LLC
公开号:US08933239B1
公开(公告)日:2015-01-13
A bis(aryl)acetal has the formula
wherein Y1 and Y2 are each independently chloro, bromo, iodo, mesylate, tosylate, triflate, or Bx, provided that Y1 and Y2 are not both selected from chloro, bromo, and iodo; each occurrence of Bx is independently a boron-containing functional group bonded to Ar1 or Ar2 via a boron atom; Ar1 and Ar2 are each independently unsubstituted or substituted C6-18 arylene, or unsubstituted or substituted C3-18 heteroarylene; provided that Ar1 and Ar2 are not covalently linked to each other to form a ring structure that includes
—Ar1—O—C—O—Ar2—; and
R1 and R2 are each independently hydrogen, unsubstituted or substituted C1-18 linear or branched alkyl, unsubstituted or substituted C3-20 cycloalkyl, unsubstituted or substituted C6-18 aryl, or unsubstituted or substituted C3-20 heteroaryl. The bis(aryl)acetal is useful as a monomer for oligoacetal and polyacetal synthesis via Suzuki polycondensation.
一种双(芳基)缩醛的化学式为
其中Y1和Y2分别独立地为氯、溴、碘、甲磺酸酯、对甲苯磺酸酯、三氟甲磺酸酯或Bx,前提是Y1和Y2不能同时选择自氯、溴和碘;每个Bx的出现独立地是通过硼原子与Ar1或Ar2结合的含硼功能基团;Ar1和Ar2分别独立地为未取代或取代的C6-18芳基烃基,或未取代或取代的C3-18杂芳烃基;前提是Ar1和Ar2不能以共价键相互连接形成包括
—Ar1—O—C—O—Ar2—;和
R1和R2分别独立地为氢、未取代或取代的C1-18直链或支链烷基、未取代或取代的C3-20环烷基、未取代或取代的C6-18芳基,或未取代或取代的C3-20杂芳基。这种双(芳基)缩醛可用作通过铃木聚缩合反应合成寡缩醛和聚缩醛的单体。