1,3,4-Oxadiazolin-2-ylen-harnstoffe

X      

    "Zur Kenntnis der 2-Imino-1,3,4-oxadiazoline", Tabelle 39
    Manfred Just, Dissertation B, 1976, Universität Potsdam
    

Nr.

R

R3

R5

Summenfor.
Molmasse

Schmelzp.
° C

Ausb.
%

ber.:gef: % N

IR-Absorption
N-HD C=O  C=N

1

Methyl

Methyl

Phenyl

C11H12N4O2 232,24

223-225

83 a)

24,12
23,90

1565

1630

1690

2

Methyl

Phenyl

Phenyl

C16H14N4O2 294,32

114-115

79 a)

19,04
18,82

1530

1665

1700

3

Phenyl

Phenyl

Phenyl

C21H16N4O2 356,39

186-183

96 a)

15,72 15,69

1530

1660

1635

4

Phenyl

Äthyl

p-Nitro-
phenyl

C17H15N5O4 353,34

216-218

91 a)

19,82 19,63

1535

1650

1690

5

Acetyl

Phenyl

Phenyl

C17H14N4O3 322,33

213-219

87 a)

17,38 17,57

1530

1645 1665

1695

6

Acetyl

Phenyl

o-Chlor-
phenyl

C17H13ClN4O3 356,77

182-184

85 a)

15,70
15,81

1520

1645
1660

1695

7

Acetyl

Phenyl

o-Nitro-
phenyl

C17H13N5O5 367,32

191-193

92 a)

19,07 18,89

1515

1640 1658

1690

8

Acetyl

Phenyl

m-Nitro-
phenyl

C17H13N5O
367,32

196-198

83 a)

19,07 18,91

1515

1635 1655

1690

9

Acetyl

Phenyl

p-Nitro-
phenyl

C17H13N5O
367,32

236-238

94 a)

19,07 18,79

1530

1630 1655

1685

a)     bezogen auf  Imino-oxadiazolin