• 약학회지
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• 제26권2호
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• pp.111-116
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• 1982

The behavior of the 5-phenylhydantoin (5-phenyl-2, 4-imidazolidinedione) ring in the aminomethylation reaction was studied in order to determine the orientation of this substitution. In case of monoaminomethylation, 3-morpholinomethyl-5-phenylhydantoin (or 3-piperidinomethyl-5- phenylhydantoin) was synthesized by the condensation of 5-phenylhydantoin with one mole of morpholine (or piperidine) and one mole of formaldehyde. 1, 3-Dimorpholinomethyl- 5-phenylhydantoin was obtained in the attempted condensation of 5-phenylhydantoin with two moles of morpholine and two moles of formaldehyde. Despite the close resemblance to morpholine the attempted condensation of 5-phenylhydantoin with piperidine and formaldehyde under reflux gave no expected 1, 3-dipiperidinomethyl -5-phenylhydantoin. In case of diaminomethylation using piperidine and formaldehyde, only 3, 5-dipiperidinomethyl-5-phenylhydantoin was formed.

• Journal of Pharmaceutical Investigation
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• 제4권1_2호
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• pp.7-12
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• 1974

The isolative determination of 4-Morpholine carboximidoylguanidine Hydrochloride in the ophthalmic solutions was examined by means of colorimetric method using oxidized nitroprusside and sodium hypobromite. According to the results, the following could be summerzied. 1) The wave length of maximun absorption in $650\;m{\mu}$. 2) Beer's Lew is obeyed for $20{\sim}80\;mcg/ml$ in colored solutions. 3) Absorptions of colored solutions must be measured 5 minutes after the addition of oxidized and 5 minutes after the completion of sodium hypobromite. 4) 4-Morpholine carboximidoylguanidine hydrochloride can be determined within standard deviation 2.0%.

• 한국염색가공학회지
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• 제30권1호
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• pp.1-8
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• 2018

In the present study, three morpholine substituted crystal violet lactone (CVL) have been synthesized to monitor the thermochromic property. This work is explaining the role of substituent on the lactone ring. The methyl substituents induced greater chromic effects than the chloro substituents. Furthermore, the three-component mixtures that contained CVL, bisphenol-A, and methyl stearate were used to analyse the thermochromic effect of the CVLs as bulk samples with various temperature. The thermochromic properties of the CVLs were evaluated using solid-state UV-Vis and FT-IR spectroscopic techniques. Finally, one of the synthesized CVL has been successfully converted into the form of a test paper similar to pH paper for use as thermal indicators.

• Bulletin of the Korean Chemical Society
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• 제29권8호
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• pp.1443-1444
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• 2008

• Bulletin of the Korean Chemical Society
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• 제29권10호
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• pp.1885-1886
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• 2008

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2008년도 추계학술대회 초록집
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• pp.140-140
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• 2008

Ni-B 합금 도금은 여러 가지 Boron 화합물을 이용한 무전해 도금에 비중을 두고 많은 연구가 이루어졌다. 전해 도금은 무전해 도금과 비교하여 욕조성이 단순하고 관리가 용이하며 하며 넓은 범위의 Boron 함량을 조절할 수 있는 이점이 있다. 본 연구에서는 낮은 Boron 함량의 Ni-B 합금층을 전기도금하여 여러 가지 물성을 연구하였다.

• 월간산업보건
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• 통권166호
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• pp.31-33
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• 2002

• 월간산업보건
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• 통권165호
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• pp.38-40
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• 2002

• 대한의용생체공학회:의공학회지
• /
• 제9권2호
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• pp.225-232
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• 1988

Poly (L- lactic acid-co-glycine-L-lactic acid) and Poly (L-lactic acid-co-glycine-L- methyl lactic acid ) have been prepared by ring opening polymerization. The monomer 6, 6-dimethyl morpho-line-2, 5-dione was synthesized by the bromoisobutylation of 2-bromoisobutyryl bromide with glycin e. L-lactide, 6-methyl morpholine-2, 5-diode. and 6, 6-dimethyl morpholine-2, 5-diode have been used as starting materials for polydepsipeptides. The synthesized monomers and copolymers have been identified by NMR and FT-lR spa- ctrophotometer. The thermal propert ies and glass transition temperature(Tg) of the copolymers have been measured by differential scanning calorimetry. The Tg values of poly(L-lactic acid co-glycine-L-lactic acid) system are increased from $53^{\circ}C\; to\; 107^{\circ}C$ with increasing the mole fraction of 6-methyl morpholine-2, 5-diode. And the Tg values of poly(L-lactic acid co-glycine-L-methyl lactic acid) system are increased from $53^{\circ}C\;to\;138^{\circ}C$ with increasing the mole fraction of 6. 6-dimethyl morpholine-2, 5-diode The thermal stability of poly (L-lactic acid-co-glycine-L-methyl lactic acid) is slightly greta text than that of poly(L-lactic acid-co-glycine-L-lactic acid) due to the methyl group.

• Korean Chemical Engineering Research
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• 제48권6호
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• pp.684-689
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• 2010

본 연구에서는 다양한 구조 유도제로 합성된 SAPO촉매를 이용하여 자일로오스의 탈수화 반응을 진행하였다. 구조 유도제로는 테트라에틸암모늄수산화물(TEAOH), 디프로필아민(DPA), 디에틸아민(DEA), 몰포린(Morpholine) 그리고 디에탄올아민(DEtA)을 사용하였다. 촉매의 특성을 파악하기 위하여 질소 흡착-탈착 등온선, 암모니아 승온탈착($NH_3$-TPD), 그리고 승온산화분석(TPO)을 이용하였다. 구조 유도제로 몰포린(Morpholine)을 사용하여 제조한 SAPO-34를 촉매로 사용하였을 경우 사용한 촉매중에서 푸르푸랄 수율이 가장 높았다. 고체산 촉매의 외부 표면적과 산농도가 자일로오스의 탈수화 반응에 영향을 주는 것으로 나타났다.