Tata nama benzena 2 substituen
Untuk menentukan rantai induk pada turunan benzena 2 substituen menggunakan penomeran dan nomor terkecil diberikan pada gugus yang memiliki prioritas paling tinggi.
Adapun urutan prioritas rantai induk (dari paling prioritas hingga paling tidak prioritas) sebagai berikut:
![begin mathsize 14px style long dash C O O H space greater than long dash H S O subscript 3 space greater than long dash C H O space greater than long dash C N space greater than long dash O H space greater than long dash N H subscript 2 space greater than long dash R space open parentheses alkil close parentheses space greater than long dash N O subscript 2 space greater than long dash X space open parentheses halogen close parentheses space end style](data:image/png;base64,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)
Jika 2 substituen berdampingan pada posisi 1 dan 2 maka diberikan awalan orto- (o-), untuk posisi 1,3 menggunakan awalan meta- (m-), dan posisi 1,4 diberikan awalan para- (p-).
![](https://imgix2.ruangguru.com/assets/miscellaneous/png_zbkp9x_8989.PNG)
Berdasarkan urutan prioritas rantai induk di atas, gugus
lebih prioritas dari gugus halogen
. Jadi, rantai induknya berupa benzena yang tersubstitusi oleh
, yaitu anilina. Berdasarkan aturan IUPAC, rantai induk akan mendapatkan nomor terkecil, maka gugus
diberi nomor 1, lalu dilanjutkan penomorannya dengan gugus
sebagai nomor terkecil kedua sehingga diperoleh tata nama o-kloroanilina.
Jadi, nama senyawa turunan benzena tersebut adalah o-kloroanilina