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Methyl-_cis and _trans-2-phenylcyclopropanecarboxylate, ethyl-_cis and _trans-2-phenylcyclopropanecarboxamide were synthesized and purified by gas chromatography. Lanthanide induced shifts (LIS) of above six compounds have been measured with Eu(fod). All protons in cyclopropane ring are assigned with chemicall shifts and lanthanide induced shifts. The trend of lanthanide induced shifts of the protons in cyclopropane ring is H_D>H_B>H_C>H_A in cis compounds. The geometric isomer can be determined by the trend of the lanthanide induced shifts of the protons in cyclopropane ring. The lanthanide induced shift of H_B in cis compounds are much smaller than those of trans compounds in consequence of the steric hinderance of phenyl grop for the formation fo lanthanide shift reagent-substrate complexes. The basicity of amino group in phenylcyclopropanecarboxamide cannot much contribute to the change of the lanthanide induced shifg, comparing to the steric factor. This explanation can be supported by the different formation constant of methyl-_trans-2-phenycyclopropanecarboxylate-Eu (fod)_3 complexes (K=33±17), methyl-_cis-2-phenycyclopropanecarboxylate-Eu (fod)_3 complexes(K=15?5) and N,N-dimethyl-_trans-2-phenylcyclopopanecarboxamide-Eu(fod)_3 complexes(K=18±2) * A thesis submitted to committee of the Graduate School of Chungnam National University in partial fulfillment of the requirements for the degree of Master of Science in january, 1983.
소정호 朝鮮大學校 産業大學院 1993 국내석사
The Purpose of this research is to develope new product models for small enterprises at the former new product models have their own range of application and strengths and weakness but for the method of strategic application for the new product model suitable to in-and -out side situation the existing models can not be applied originally. Thus, this research is to supplement the weakness of the existing models and develope the new model suitable for small enterprises at the start. The charactristics of new model in this research is as follows. First, it includes the function of information feed back to be integrated system atically. Second, it leads to unify the responsibility and the authority to develope new products, and divide the administration technique, production, and Marketing seetor and integrate it horizontally. Third, it aimed to be confirmed the business decision point which would be able to decide the postponement or suspension of the development. As above, in case that the new product model in this research is applied to small enterprises at the start, the risk of the application of the existing model will be minimized thanks to the system atic information integration of the major sectors of the enterprise the cleat-establishment of responsibility and authority, and saving time and expense.