{"id":204104,"date":"2025-03-21T11:28:52","date_gmt":"2025-03-21T11:28:52","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=204104"},"modified":"2025-03-21T11:28:55","modified_gmt":"2025-03-21T11:28:55","slug":"what-products-are-expected-in-the-ethoxide-promoted-s-elimination-reaction-of-1-chloro-1-methylcyclohexane","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/21\/what-products-are-expected-in-the-ethoxide-promoted-s-elimination-reaction-of-1-chloro-1-methylcyclohexane\/","title":{"rendered":"What product(s) are expected in the ethoxide-promoted \u00df-elimination reaction of 1-chloro-1-methylcyclohexane"},"content":{"rendered":"\n<p>What product(s) are expected in the ethoxide-promoted \u00df-elimination reaction of 1-chloro-1-methylcyclohexane? Omit ions, salts, and ethanol from your response. Draw the product(s).<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer:<\/h3>\n\n\n\n<p>The expected product of the ethoxide-promoted \u03b2-elimination reaction of <strong>1-chloro-1-methylcyclohexane<\/strong> is <strong>1-methylcyclohexene<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p>The reaction mechanism follows the <strong>E2 (bimolecular elimination) mechanism<\/strong>, which occurs under strong base conditions like ethoxide (EtO\u207b). Here\u2019s how the reaction proceeds:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Formation of the Transition State:<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The strong base (EtO\u207b) abstracts a \u03b2-hydrogen (H) from the carbon adjacent to the carbon bearing the leaving group (Cl).<\/li>\n\n\n\n<li>This removal of the proton must occur in an <strong>anti-periplanar<\/strong> (coplanar but opposite-facing) geometry to the leaving group for the best orbital alignment, which is characteristic of an E2 mechanism.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Elimination of the Leaving Group:<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>As the \u03b2-hydrogen is removed, the electrons from the C-H bond shift to form a \u03c0 bond between the \u03b1- and \u03b2-carbons.<\/li>\n\n\n\n<li>Simultaneously, the chlorine (Cl\u207b) leaves, forming the alkene.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Formation of the Alkene Product:<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Since <strong>1-chloro-1-methylcyclohexane<\/strong> has only one available \u03b2-hydrogen (on the \u03b2-carbon adjacent to the chlorine), only <strong>one possible alkene product<\/strong> can form: <strong>1-methylcyclohexene<\/strong>.<\/li>\n\n\n\n<li>The formation of a double bond follows <strong>Zaitsev\u2019s rule<\/strong>, which states that the most substituted and stable alkene is preferentially formed.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Why Only 1-Methylcyclohexene?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The \u03b2-hydrogen on carbon-2 is eliminated, leading to the formation of <strong>1-methylcyclohexene<\/strong>.<\/li>\n\n\n\n<li>No regioisomeric products are formed because the only \u03b2-hydrogen available leads directly to the formation of this particular alkene.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Summary:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The reaction follows an <strong>E2 mechanism<\/strong> because of the strong base (ethoxide).<\/li>\n\n\n\n<li>The product is <strong>1-methylcyclohexene<\/strong> as dictated by <strong>Zaitsev\u2019s rule<\/strong>.<\/li>\n\n\n\n<li>The elimination requires an <strong>anti-periplanar conformation<\/strong>, ensuring that elimination proceeds in a single step without intermediates.<\/li>\n<\/ul>\n\n\n\n<p>Thus, <strong>1-methylcyclohexene<\/strong> is the sole product of this reaction.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What product(s) are expected in the ethoxide-promoted \u00df-elimination reaction of 1-chloro-1-methylcyclohexane? Omit ions, salts, and ethanol from your response. Draw the product(s). The correct answer and explanation is : Answer: The expected product of the ethoxide-promoted \u03b2-elimination reaction of 1-chloro-1-methylcyclohexane is 1-methylcyclohexene. Explanation: The reaction mechanism follows the E2 (bimolecular elimination) mechanism, which occurs under [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-204104","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/204104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=204104"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/204104\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=204104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=204104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=204104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}