An efficient synthesis of new azomethine ylide: 1-((diaminomethyleneammonio)(aryl)methyl)-4,4-dimethyl-2,6-dioxocyclohexan-1-ide under solvent-free conditionds

* E-mail: lcrong@jsnu.edu.cn or lcrong2005@yahoo.com Received June 13, 2016; revised August 10, 2016; published online September 1, 2016. Project supported by Natural Science Foundation of Jiangsu Normal University (HXKY2015B001), the Priority Academic Program Development of Jiangsu Higher Education Institutions and Sponsored by Brand Major of Universities in Jiangsu Province (TAPP) for financial support. 江苏师范大学自然科学基金(HXKY2015B001),江苏省优势学科和江苏省品牌专业建设资助项目.