How can i write the structure of the following,2-3-Dimethyl-butaneamine,propoxy-ethane?

1 Answer
P dilip_k
Apr 24, 2018

(1)

  • To write structure of the 2-3-Dimethyl-butaneamine we are to start with the stemname 'but' first. It suggests that the compound has got a longest chain of #4# carbon atoms. So the carbon skeleton is

#-stackrel(4)C-stackrel(3)C-stackrel(2)C-stackrel(1)C-#

  • Its suffix name is amine.As suffix name carries no locant. The primary amino group #(-NH_2)# group is linked with #stackrel(1)C# as follows.

#-stackrel(4)C-stackrel(3)C-stackrel(2)C-stackrel(1)C-NH_2#

  • '2,3-dimethyl' prefix name tells that two methyl #CH_3-# groups are linked with #stackrel(2)Candstackrel(3 )C# as follows

#-stackrel(4)C-stackrel(3)C(CH_3)-stackrel(2)C(CH_3)-stackrel(1)C-NH_2#

  • 'ane' suffix just after stem name 'but' means the compound is saturated one. So satisfying 4valencies of each C atom by H atom the structure of the compound becomes

#stackrel(4)CH_3stackrel(3)CH(CH_3)stackrel(2)CH(CH_3)stackrel(1)CH_2NH_2#

(2)
In propoxy-ethane stem name 'eth'suggests a chain of 2C atoms. The propoxy group #CH_3CH_2CH_2O-# is attached with it and the compound is saturated as marked by 'ane' suffix. Hence its structure is

#CH_3CH_2CH_2O-CH_2CH_3#

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