13.02.2013 Views

Download (4Mb) - Etheses - Saurashtra University

Download (4Mb) - Etheses - Saurashtra University

Download (4Mb) - Etheses - Saurashtra University

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Chapter – 4 Studies on different types of reactions…..<br />

7. C3-C12 bond cleavage gave two characteristic peaks at 249 m/e and<br />

158 m/e respectively. [6]<br />

8. After C3-C12 bond cleavage, from 249 m/e fragment loss of fluorine<br />

atom gave characteristic peak at 234 m/e. [7]<br />

4.11.1.3 FRAGMENTATION PATTERN FOR DNJ-905<br />

8<br />

9<br />

7<br />

10<br />

6<br />

5<br />

365 m/e<br />

26<br />

27<br />

28<br />

8<br />

9<br />

7<br />

10<br />

6<br />

5<br />

381 m/e<br />

O 1<br />

2<br />

3<br />

4 12<br />

17<br />

N 16<br />

25<br />

30<br />

29<br />

26<br />

27<br />

28<br />

13<br />

N 15<br />

O 1<br />

2<br />

3<br />

4 12<br />

14<br />

17<br />

N 16<br />

25<br />

30<br />

29<br />

[3]<br />

19<br />

20<br />

8<br />

9<br />

24<br />

13<br />

21<br />

N 15<br />

7<br />

10<br />

14<br />

23<br />

+.<br />

22<br />

6<br />

5<br />

333 m/e<br />

19<br />

20<br />

O 1<br />

4<br />

O 18<br />

24<br />

21<br />

[2]<br />

2<br />

3<br />

17<br />

4-[3-(3-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl]-3, 4-dihydro-2H-chromeno<br />

[4, 3-d] pyrimidine-2, 5(1H)-dione (DNJ-1603)<br />

23<br />

22<br />

N<br />

H 16<br />

O 11<br />

12<br />

13<br />

N 15<br />

F 31<br />

8<br />

9<br />

8<br />

9<br />

7<br />

10<br />

393 m/e<br />

7<br />

10<br />

6<br />

5<br />

6<br />

5<br />

27<br />

26<br />

27<br />

28<br />

O 1<br />

26<br />

4<br />

O 18<br />

O 1<br />

4<br />

O 18<br />

2<br />

3<br />

17<br />

N 16<br />

25<br />

30<br />

O 11<br />

12<br />

13<br />

1. The target compound showed characteristic molecular ion peak.<br />

2. N5-C6 and N7-C8 bond cleavages gave characteristic peak at 438 m/e.<br />

[1]<br />

3 After N5-C6 and N7-C8 bond cleavages, C4-N5 bond cleavage with<br />

subsequent loss of nitro group gave characteristic peak at 374 m/e. [2]<br />

Department of Chemistry, <strong>Saurashtra</strong> <strong>University</strong>, Rajkot – 360 005 238<br />

N 15<br />

28 29<br />

[4] [5]<br />

14<br />

+.<br />

19<br />

20<br />

24<br />

21<br />

23<br />

22<br />

2<br />

3<br />

17<br />

N 16<br />

25<br />

30<br />

29<br />

[1]<br />

F 31<br />

+.<br />

O 11<br />

12<br />

13<br />

N 15<br />

+.<br />

14<br />

14<br />

19<br />

20<br />

19<br />

20<br />

24<br />

24<br />

8<br />

9<br />

21<br />

21<br />

410 m/e<br />

23<br />

22<br />

23<br />

22<br />

7<br />

10<br />

318 m/e<br />

6<br />

5<br />

F 31<br />

26<br />

27<br />

28<br />

O 1<br />

4<br />

O 18<br />

2<br />

3<br />

17<br />

N<br />

16<br />

25<br />

30<br />

29<br />

[6]<br />

O 11<br />

12<br />

13<br />

N 15<br />

14<br />

26<br />

27<br />

28<br />

+.<br />

26<br />

27<br />

28<br />

8<br />

9<br />

17<br />

17<br />

7<br />

10<br />

CH3 12<br />

13<br />

14<br />

N 16<br />

25<br />

30<br />

29<br />

CH3 12<br />

13<br />

14<br />

N 16<br />

25<br />

30<br />

29<br />

N 15<br />

[7]<br />

6<br />

5<br />

N 15<br />

O 1<br />

4<br />

19<br />

O 18<br />

20<br />

24<br />

19<br />

2<br />

3<br />

20<br />

21<br />

24<br />

23<br />

234 m/e<br />

249 m/e<br />

O 11<br />

+.<br />

22<br />

21<br />

23<br />

+.<br />

22<br />

158 m/e<br />

F 31<br />

+.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!