The present preferred embodiments relate to a method for the synthesis of a compound having the following general formula:
the method comprising the step of reacting, in presence of a diprotic acid having a negative pKa, a compound having the general formula:
wherein R1 and R2 are organic groups and wherein X and Y are independently selected from the group consisting of hydrogen, chloro, bromo, iodo, boronic acid, boronate esters, borane, pseudohalogen and organotin. It further relates to compounds so obtained and to compounds resulting from the ring closure of compound (II).
本发明的首选实施例涉及一种合成具有以下一般式的化合物的方法:所述方法包括在具有负pKa的二元酸存在下反应具有以下一般式的化合物:其中R1和R2是有机基团,X和Y独立地选择自氢、
氯、
溴、
碘、
硼酸、
硼酸酯、
硼烷、伪卤素和
有机锡的组。它进一步涉及由化合物(II)的环闭合产生的化合物和由此获得的化合物。