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Sulfonyl chlorides are a class of cheap and readily available basic chemicals, which have routinely served as electrophilic reagents in their chemical transformations. Herein, we disclose a novel PPh3‐mediated nucleophilic sulfonation method of sulfonyl chlorides with arynes. Different from the classical P(III)‐mediated reductive deoxygenation reaction of sulfonyl chlorides, the valence state of the sulfur atom has not been changed. This protocol exhibits broad functional group tolerance and provides a direct approach to a variety of aryl and alkyl sulfones. [ABSTRACT FROM AUTHOR]

The paper pointed out that chain network topology is suitable for underground wireless Mesh network and electromagnetic wave attenuation analysis and node space design should be considered combining with concrete roadway environment according to characteristics of underground roadway. It proposed a method combining reactive routing protocol and proactive routing protocol with MIC criterion for that current routing protocol cannot meet with requirements of chain network topology of underground wireless Mesh network. It gave general structure and characteristics of coal mine emergency rescue system based on wireless Mesh network on the above basis. The experiment result showed that applying wireless Mesh network in coal mine emergency rescue system can improve safety, reliability and feasibility of rescue work.

Hiccup refers to the disease mainly manifesting as continuous sounds between the throat with short and frequent characteristics and difficulty to suppress the sounds by patients themselves caused by ascending counterflow of stomach qi against the diaphragm and the counterflow qi rushing up to the upper. Intractable hiccup is the hiccup lasting more than 48 h or the hiccups recurring repeatedly [1]. Primary liver cancer is one of the common malignant tumors in our country. Interventional therapy is the preferred way of non-surgical therapy for treatment of liver cancer. The hiccup is one of the complications after intervention operation of liver cancer, especially in the patients with location of tumor close to the diaphragm. Hiccups after interventional therapy is generally more intractable, which would aggravate pain of patient after the operation, influence the diet and sleep of patient, and increase anxiety emotion of patient. Even the upper gastrointestinal bleeding would occur, which could seriously affect the quality of life of patient after the operation [2, 3]. For the treatment of this disease, the western medicine mainly applies drugs with effects of protecting the gastric mucosa, spasmolysis and sedation, or takes the phrenic nerve block treatment. However, these treatments are limited in clinical application due to the efficacy or safety problems. In Traditional Chinese Medicine (TCM), there are diverse therapeutic methods to treat this disease. Among the TCM therapeutic methods, acupuncture treatment has more advantage in clinic. The author applied acupuncture at jia ji points to treat the intractable hiccup after intervention operation of primary liver cancer, and the efficacy was satisfactory. The report is as follows. [ABSTRACT FROM AUTHOR]