\documentclass[12pt,a4paper,oneside,notitlepage]{book}
\usepackage{mathtext}
\usepackage[T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[russian]{babel}
\usepackage{amssymb,amsfonts,amsmath,amsthm,latexsym}
\usepackage[all]{xy}
\usepackage{indentfirst}
\usepackage[usenames]{color}
\usepackage[print]{booklet}
\usepackage{pdfpages}
\usepackage{tocloft}
\usepackage{titlesec}
\titleformat{\chapter}
{\Large\bfseries} % format
{} % label
{0pt} % sep
{\huge}
\renewcommand{\cftpartleader}{\cftdotfill{\cftdotsep}} % for parts
\renewcommand{\cftchapleader}{\cftdotfill{\cftdotsep}} % for chapters
\pagespersignature{64}
\setpdftargetpages % размещение оглавления, для dvi формата setdvipstargetpages
\textwidth=130mm \textheight=209mm
\pagestyle{plain} \sloppy \topmargin6mm \oddsidemargin15mm
\evensidemargin15mm
\begin{document}
\tableofcontents
\newpage
\chapter{Часть 1}
My text 1
\chapter{Часть 2}
My text 2
\end{document}