MCQ
The $IUPAC$ name of the compound shown below is :


- ✓$3-$bromo$-1-$chlorocyclohexene
- B$1-$bromo$-3-$chlorocyclohexene
- C$2-$bromo$-6-$chlorocyclohex$-1-$ene
- D$6-$bromo$-2-$chlorocyclohexene

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Method $1\,:\,$ $RBr\xrightarrow[diethyl\,\,ether]{Mg}RMgBr\xrightarrow[2.\,{{H}_{3}}{{O}^{+}}]{1.\,C{{O}_{2}}}RC{{O}_{2}}H$
Method $2\,:\,$ $RBr\xrightarrow{NaCN}RCN\xrightarrow[heat]{{{H}_{2}}O,HCl}RC{{O}_{2}}H$
Which one of the following statements correctly describes this conversion ?
Minimum temperature at which it will become spontaneous is ..... $K.$(Integer)