eng Excellent Publishers International Journal of Current Microbiology and Applied Sciences (IJCMAS) CODEN(USA)-IJCMO9 2319-7692 2319-7706 2015-12-20 4 12 337 342 article S-Benzyl Isothiouronium salts of some Sulfonylureas as potential herbicides Mohamed A. Salama 1 Salwa M. Morsy 2 Amal A. Altalhi 3 Abdel- Lateef A. Helalia 4 Petroleum Biotechnology Lab, Egyptian Petroleum Research Institute, Cairo, Egypt Chemistry Department, Faculty of Science, Taif University, Kingdom of Saudi Arabia Plant Protection Department, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt

S-Benzyl isothiouronium salt of carbamic acid 3,4-dichlorophenyl sulfonyl methyl ester (I) together with a series of S-benzyl isothiouronium salts of N- substituted- N - 3,4- dichlorophenyl sulfonylurea (IIa-p) were prepared. Structure confirmation was based on element analysis and infrared spectroscopy. The herbicidal activity of the prepared compounds was evaluatedagainst Echinoocloa crus galliL. Beauv (barnyard grass). The introduction of the functional isothiouronium group [C6H5CH2SC(NH2)2]+into the piperidyl- N- substituted- N - 3,4- dichlorophenyl sulfonylurea relatively raised the herbicidal activity, but the trend was lowering of the herbicidal activity of the prepared isothiouronium salts which will be discussed in detail later.

 http://ijcmas.com/vol-4-12/Mohamed A. Salama, et al.pdf Isothiouronium Salts Sulfonylureas Herbicidal activity