• Journal of Photoscience
• /
• v.7 no.1
• /
• pp.5-8
• /
• 2000

Irradiation of 2'-bromobenzanilide in acetonitrile containing sodium hydroxide under nitrogen leads to the formation of the intramolecular photosubstituted product, 2-phenylbenzoxazole (45 %) along the minor photoreduced and photo-Fries type product. The photoreaction of 2'chlorobenzanilide under the same condition as above gives the photo-Fries type reaction product, 2-amino-3-chlorobenzophenone (22%) with minor product, 2-phenylbenzoxazole. The photoreaction of 2'-chlorobenzanilide in acetonitrile produces a photocyclized product, phenanthridone (19%) along with minor products, 2-phenylbenzoxazole, benzanilide, 2-amino-3-chlorobenzophenone, and 4-amino-3-chlorobenzophenone, while that of 2'-bromobenzanilide produces photosubstituted product, 2- phenylbenzoxazole.

• Bulletin of the Korean Chemical Society
• /
• v.22 no.11
• /
• pp.1202-1206
• /
• 2001

Irradiation of 1-(o-hydroxyphenyl)-2-pentamethyldisilanylethyne 1 in a concentrated benzene solution has provided photodimer product 7 along with other reported photoproducts. Irradiation of 1 in methanol yields 1-(o-hydroxyphenyl)-2-trimethylsilylethyne 2 and its reduction product 13, via silacyclopropene intermediate 10, and the reduction product 8 and two methanol addition products, 11 and 12, via o-hydroxyphenylethyne. Photolysis of 1 with acetone in deaerated methylene chloride affords site specific and regioselective 1 : 1 adduct 16 via silacyclopropene intermediate 10.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2009.10a
• /
• pp.879-882
• /
• 2009

A pixel isolation wall of liquid crystal display is fabricated by the anisotropic photoreaction of a cinnamate based prepolymer. The various oligomers containing a cinnamate moiety were synthesized and used for the formation of the pixel isolation wall. The anisotropic photoreaction of cinnamate moiety was closely related with the liquid crystal orientation at the polymer wall boundary.

• Bulletin of the Korean Chemical Society
• /
• v.35 no.11
• /
• pp.3373-3376
• /
• 2014

• Bulletin of the Korean Chemical Society
• /
• v.33 no.11
• /
• pp.3823-3826
• /
• 2012

• Bulletin of the Korean Chemical Society
• /
• v.30 no.1
• /
• pp.242-244
• /
• 2009

• Bulletin of the Korean Chemical Society
• /
• v.26 no.9
• /
• pp.1427-1430
• /
• 2005

• The Journal of Korean Physical Therapy
• /
• v.4 no.1
• /
• pp.13-18
• /
• 1992

Most of the electromagnetic agents used in physical therapy rely for their effects on tissue heating and photoreaction of the body. Infrared and untraviolet light on the other hand, owns its place in medicine because it produces direct photochemial reaction when it interacts with the body. This study was carried out to investigate and review for photoreaction of the akin. The results were an follows. 1. The effects of the infrared are heat production, increasing metabolism, increasing circulation, vasodilatation and pigmentation. 2. Directed photoreactions are divided into acute reaction and chronic reaction, and the acute reaction makes pigmentation from $290\~320nm$ of ultraviolet ray. 3. Ultraviolet ray formated pigmentations, which are melanoblasts excited from ultraviolet ray and received chemical stimulation, that make melanin granule. 4. If exposured with long duration, at ultraviolet ray, it makes skin thickening and epithelioma. 5. Indirected photoreaction is made by existenced hypersensitivity of photoreaction or lack of photodefence structure. 6. The phototoxic reactions are synthesized by chemical reaction of excitement from ultraviolet ray also this time analysis, synthesis and polymerization from energy of a circumferenced substance. 7. Sunscreen substances are P-amino benzoic acid and oxidate titan.

• Bulletin of the Korean Chemical Society
• /
• v.23 no.9
• /
• pp.1208-1254
• /
• 2002

Photoreaction of N-(o-halophenyl)acetamide in basic acetonitrile produces an intramolecular substituted product, 2-methylbenzoxazole in addition to reduced product, acetanilide, whereas photoreaction of N-(o-halobenzyl) acetamide affords a reduced product, N-benzylacetamide only. On the basis of preparative reaction, kinetics, and UV/vis absorption behavior, an electrophilic aromatic substitution of aryl halide with oxygen of its amide bond are proposed.

• Journal of Photoscience
• /
• v.1 no.1
• /
• pp.1-7
• /
• 1994

Irradiation of 1-phenyl-4-(2-pyridyl)-1,3-butadiyne (2-PPB) with dimethyl fumarate (DMFu) and 2,3-dimethyl-2-butene (DMB) yields photoadducts, 1-12. The mechanism of the photoreaction of 2-PPB with olefins is similar to that of 1,4-diphenyl-1,3-butadiyne with oiefins.