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1,3 - Dimethyl - 4 - Acyl - Pyrazol - 5 - yl Carbamates 의 합성과 제초활성
이천수,박현수,김정배 한국농화학회 1989 Applied Biological Chemistry (Appl Biol Chem) Vol.32 No.2
1,3-Dimethyl-4-acyl-5-hydroxypyrazoles were treated with methyl isocyanate to give corresponding carbamates. They were 1,3-dimethyl-4-benzoyl-pyrazol-5-yl N-methylcarbamate(V), 1, 3-dimethyl-4-(2-chlorobenzoyl)-pyrazol-5-y1 N-methyl-carbamate(VI), and 1, 3dimethyl-4-(2,4-dichlorobenzoy1)-pyrazol-5-yl N-methyl-carbamate(VII). The structures of the compounds were fully identified by UV, IR, ¹H-NMR and ^(13)C-NMR. The synthesized carbamate compounds were tested for the phytotoxicity on the seed germination and the seedling growth of rice, radish, green-pea and turf grass. At 50ppm concentraction, the germination of seeds was not significantly affected. At higher concentraction, however, phytotoxic tendency on the seed germination and seedling growth was observed. In addition, these compounds were less phytotoxic to rice and turf seedlings as compared with radish and green pea seedlings.
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Pyrazol-5-yl p-Substituted Benzenesulfonate 유도체들의 항균활성 및 살충성
이천수 啓明大學校 産業技術硏究所 1999 産業技術硏究所 論文報告集 Vol.22 No.2
Prazol-5-yl p-substituted benzenesulfonate derivatives were evaluated for in vivo their antifungal and insecticidal activities against six kinds of typical plant diseases and eight insect pests in the primary screening test. Among these compounds, 4-(2,4-dichlorobenzoyl)-1,3-dimethylpyrazol-5-yl p-dimethylcarbamoylamidobenzenesulfonates(3) were found to show relatively high levels of antifungal activity against tomato late blight, wheat leaf rust and barley powdery mildew fungi, and also to exhibit the selective higher activity against two-spotted spider mite and diamond-back moth. However they were not effective any activities against other diseases and insect pests.
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INCOTERMS 2000의 運送人 引渡條件에 관한 硏究
이천수 동서대학교부설연구센터 2001 연구센터논문집 Vol.4 No.1
INCOTERMS, the official ICC rules for the interpretation of trade terms, facilitate the conduct of International trade. Reference to INCOTERMS 2000 in a sales contract defines clearly the parties respective obligations and reduces the risk of legal complications. The purpose of this paper is to examine the main contents of the FCA term in the INCOTERMS 2000, to investigate and the problem of Terminal Handling Charge in relating to FCA term. To analyse main contents of the FCA term in the INCOTERMS 2000, chapter III is divided into four parts as follow ① Delivery and taking delivery. ② Transfer of risks. ③ Division of costs. ④ Proof of delivery, transport document or equivalent electronic message. Also this paper presented alternatives to settle the problem of Terminal Handling Charge in relating to FCA term in the chapter IV.
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오탄당(五炭糖) Triazine 유도체(誘導體)의 Acetylation 과 생리활성에 관하여
이천수 한국농화학회 1978 Applied Biological Chemistry (Appl Biol Chem) Vol.21 No.2
Acetylation of triazinylated monosaccharides was carried out. The products were identified by elementary analysis. IR and NMR with Methyl [T]-β-L-acetyl-arabopyranoside and Methyl [T]-α-D-acetyl-lyxopyranoside respectively. The triazine derivatives of uronic acids had no remarkable biological activities against dish and rice, and also showed not to be effected on antifungal and antibacterial activities.
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화환신용장거래에서 은행간 대금상황에 따른 문제점과 그 대응책에 관한 연구
이천수 국제무역학회 2001 국제무역연구 Vol.7 No.2
본고에서는 무역거래의 신용장 대금결제에 있어 최근 빈번히 이루어지고 있는 은행간 대금상환을 고찰하였다. 이러한 은행간 대금상환은 무역거래의 증대에 따른 대량의 대금상환사무를 신속·효율적으로 처리하기 위하여, 국제금리나 환율동향 등을 고려하여 자금을 효율적으로 운용함으로써 은행의 수익성 제고를 위하여, 그리고 이와 같은 자금의 운용조달과 동시에 환율변동에 수반하는 환차손의 위험을 회피시키기 위하여 환포지션의 조정 등의 필요성 때문에 그 활용이 더욱 증대하고 있다. 특히 이 대금상환방식은 이전의 직접 대금상환방식보다도 편리한 점이 있지만, 그 특수성으로 인하여 분쟁이 발생하기 쉽다. 그러나 이에 대한 국내외의 체계적인 연구는 거의 전무하고, 이로 인하여 분쟁예방 뿐만 아니라 분쟁발생시 신속하고 합리적인 해결책을 모색하기가 어려운 실정이다. 따라서 본고에서는 분쟁의 예방적 차원과 해결적 차원에서 은행간 대금상환을 상환수권서의 발행, 대금상환청구의 제시 그리고 대금상환의 실행으로 구분하여 이에 따른 각각의 문제점을 검토하여 실무적인 견지에서 그 대응책을 제시하였다. 이러한 문제검토와 대응책 제시는 무역거래를 행하는 무역업자 또는 은행관계당사자 모두에게 신용장거래의 안정성과 예측가능성을 제고시켜 이와 관련된 분쟁사건 발생의 최소화에 도움을 줄 것으로 판단한다. This study is to provide practical devices for efficient application of bank-to -bank reimbursement. It makes possible for concerned parties of documentary credits to establish desirable practices in international payment system in relation to reimbursement between banks. This study offers the followings as practical devices First, in connection with issuance of reimbursement authorisation, ① the reimbursing bank should not receive certificates of compliance with the terms of a credit. Should an issuing bank wish to require a certificate of compliance, it should indicate in the credit that this should be sent directly to it and not to the reimbursing bank. ② Reimbursement authorisations must not have expiry dates, except in the case of a reimbursement undertaking. ③ Issuing banks should not issue duplicate instructions. If they do, the issuing bank will be responsible for any duplicate reimbursement. Second, in connection with payment under reserve or imdemnity, these informations should not be included in the reimbursement claim against reimbursing bank. If reimbursing banks honour claims that say that payment has been made under reserve or indemnity, they are not responsible. Third, a basic solution for some problems involved with the reimbursement through reimbursing bank is that reimbursing bank is not a party to the credit transaction. As a result, it acts independently of all parties to the credit, except for the issuing bank, in facilitating a payment on behalf of the issuing bank. Acting in this capacity, a reimbursing bank is never obligated to make payment under a reimbursement authorisation, unless it has issued a reimbursement undertaking. In addition to the above mentioned, Uniform Customs and Practice for Documentary Credits, 1993(UCP) Article 19 should be removed for practical use of Uniform Rules for Bank-to-Bank Reimbursements under Documentary Credits, 1995(URR) in the bank to bank reimbursement.
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이천수,윤무홍,최석범,노승백 ( Chun Soo Lee,Mu Hong Yoon,Seok Burm Choe,Seung Baik Rho ) 한국공업화학회 1992 공업화학 Vol.3 No.1
수용액에서 amine류와 arylsulfonyl carbamate류를 반응시켜 다음과 같은 arylsulfonyl urea유도체들을 좋은 수율로 쉽게 합성할 수 있다 : 1) N-Arylsulfonyl-N`-arylurea 유도체, 2) N-Arylsulfonyl-N`-alkyl urea 유도체, 3) N-Arylsulfonyl-N`-heterocyclic urea 유도체. Arylsulfonyl urea의 합성에 관한 반응메카니즘은, 먼저 산-염기 반응에 의해 ion-pair형태가 만들어지고, 그 다음 사면체형 중간체를 형성하는 친핵성첨가반응, 그리고 산촉매애 의한 alkoxide ion 과 양성자의 제거반응에 따라 일어난다. Arylsulfonyl urea derivatives can be easily prepared in good yield by treating amines with arylsulfonyl carbamates in aqueous solution : 1) N-Arylsulfonyl-N`-aryl urea derivatives, 2) N-Arylsulfony-N`-alkyl urea derivatives, 3) N-Arylsulfonyl-N`-heterocyclic urea derivatives. The proposed reaction mechanisms for preparing arylsulfonyl ureas involve formation of an ion-pair conformation by initial acid-base reaction, then formation of a so-called tetrahedral intermediate by nucleophilic addition, followed by an acid-catalyzed elimination of an alkoxide ion and loss of a proton.
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