Boiling points (°C) of saturated heterocycles and corresponding carbocycles

type of heteroatom

{{r}}

ring size number (and position) of heteroatoms N (as NH) O S saturated cycloalkane

3 one 56 11 55 –33

4 one 63 48 94 13

5 one 87 65 121 49

6 one 106 88 141 80

6 two (1,2) 150 116 190* 80

6 two (1,3) 150 106 207 80

6 two (1,4) 145 101 200 80

7 one 138 120 174 119

*Calculated using the experimentally obtained boiling point at reduced pressure.