Organosubstituierte Kalium‐2,5‐dihydro‐1,2,5‐oxasilaboratolate aus cis‐2‐Boryl‐1‐silylalkenen mit Kaliumhydroxid

Organosubstituierte Kalium‐2,5‐dihydro‐1,2,5‐oxasilaboratolate aus cis‐2‐Boryl‐1‐silylalkenen mit Kaliumhydroxid

Organosubstituted Potassium 2,5‐Dihydro‐1,2,5‐oxasilaboratolates from cis‐2‐Boryl‐1‐silylalkenes with Potassium Hydroxide The compounds (E)‐CH3ElIV(R2)2CR3C(C2H5)B(C2H5)2 [R2,2,3 = CH3: 1a; R2 = C2H5, R2,3 = CH3: 1b; R2,2 = C6H5, R3 = CH3: 1c; R2,2 = CH3, R3 = C6H5: 1d; R2,2 = CH3, R3 = c‐C6H11: 1e...

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Veröffentlicht in:Chemische Berichte 1990-06, Vol.123 (6), p.1253-1260
Hauptverfasser: Köster, Roland, Seidel, Günter, Wrackmeyer, Bernd, Horchler, Klaus
Format: Artikel
Sprache:eng
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cis‐2‐Boryl‐1‐silylalkenes
Cyclization
Hydroxy‐triorgano‐borates
Organoboron‐silicon heterocycles
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container_volume 123
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Seidel, Günter
Wrackmeyer, Bernd
Horchler, Klaus
description Organosubstituted Potassium 2,5‐Dihydro‐1,2,5‐oxasilaboratolates from cis‐2‐Boryl‐1‐silylalkenes with Potassium Hydroxide The compounds (E)‐CH3ElIV(R2)2CR3C(C2H5)B(C2H5)2 [R2,2,3 = CH3: 1a; R2 = C2H5, R2,3 = CH3: 1b; R2,2 = C6H5, R3 = CH3: 1c; R2,2 = CH3, R3 = C6H5: 1d; R2,2 = CH3, R3 = c‐C6H11: 1e] add KOH in THF at – 20°C to form the pure solid 1:1 adducts KOH‐1ElIV with ElIV = Si, Sn, and Pb. Above ≥0°C compounds KOH‐1Si liberate quantitatively R2H to give the potassium salts of the cyclic anions K‐2a to K‐2e. With Me4NCl or Me3NHCl the corresponding salts Me4N‐2 or Me3NH‐2 are obtained from K‐2. Above ≈︁80°C KOH‐1aGe and KOH‐1aSn eliminate gas (CH4, C2H6) with formation of mixtures. The compounds KOH‐1ElIV and K‐2Si are characterized by multi‐NMR spectroscopy (1H, 11B, 13C, 17O, 29Si, 119Sn, 207Pb), and the NMR data of KOH‐1aElIV are compared to the data of the compounds .
doi_str_mv 10.1002/cber.19901230607
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Above ≥0°C compounds KOH‐1Si liberate quantitatively R2H to give the potassium salts of the cyclic anions K‐2a to K‐2e. With Me4NCl or Me3NHCl the corresponding salts Me4N‐2 or Me3NH‐2 are obtained from K‐2. Above ≈︁80°C KOH‐1aGe and KOH‐1aSn eliminate gas (CH4, C2H6) with formation of mixtures. The compounds KOH‐1ElIV and K‐2Si are characterized by multi‐NMR spectroscopy (1H, 11B, 13C, 17O, 29Si, 119Sn, 207Pb), and the NMR data of KOH‐1aElIV are compared to the data of the compounds .</description><identifier>ISSN: 0009-2940</identifier><identifier>EISSN: 1099-0682</identifier><identifier>DOI: 10.1002/cber.19901230607</identifier><language>eng</language><publisher>Weinheim: WILEY‐VCH Verlag</publisher><subject>cis‐2‐Boryl‐1‐silylalkenes ; Cyclization ; Hydroxy‐triorgano‐borates ; Organoboron‐silicon heterocycles</subject><ispartof>Chemische Berichte, 1990-06, Vol.123 (6), p.1253-1260</ispartof><rights>Copyright © 1990 WILEY‐VCH Verlag GmbH &amp; Co. 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Above ≥0°C compounds KOH‐1Si liberate quantitatively R2H to give the potassium salts of the cyclic anions K‐2a to K‐2e. With Me4NCl or Me3NHCl the corresponding salts Me4N‐2 or Me3NH‐2 are obtained from K‐2. Above ≈︁80°C KOH‐1aGe and KOH‐1aSn eliminate gas (CH4, C2H6) with formation of mixtures. The compounds KOH‐1ElIV and K‐2Si are characterized by multi‐NMR spectroscopy (1H, 11B, 13C, 17O, 29Si, 119Sn, 207Pb), and the NMR data of KOH‐1aElIV are compared to the data of the compounds .</description><subject>cis‐2‐Boryl‐1‐silylalkenes</subject><subject>Cyclization</subject><subject>Hydroxy‐triorgano‐borates</subject><subject>Organoboron‐silicon heterocycles</subject><issn>0009-2940</issn><issn>1099-0682</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNqFkE1OwzAQhS0EEqWwZ9kDNGXs_NhesKBV-RGVKiFYRxPbAYPbIDsRza5H4IychIR20R2LNzMave8tHiGXFCYUgF2pwvgJlRIoiyEDfkQGFKSMIBPsmAwAQEZMJnBKzkJ4B4gTnsUDsl36V1xXoSlCbevGGl-b0SM626x-tt9snHZT27dW-6q76Hj3qTYYrMOi8lhXDjsEmzBSNvRMp2nlW9f7O3XG1qH7MGuzHq1svU__i9xYfU5OSnTBXOz3kLzczp9n99Fiefcwu1lEioHgkZaqKGQshOSoRFpyytKY64KrkiY0RZYUOpEaQWkwBtMyQ5UlVGrBBDVSxEMCu1zlqxC8KfNPb1fo25xC3jeY9w3mBw12yPUO-bLOtP_689l0_nTI_wLcl4C_</recordid><startdate>199006</startdate><enddate>199006</enddate><creator>Köster, Roland</creator><creator>Seidel, Günter</creator><creator>Wrackmeyer, Bernd</creator><creator>Horchler, Klaus</creator><general>WILEY‐VCH Verlag</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>199006</creationdate><title>Organosubstituierte Kalium‐2,5‐dihydro‐1,2,5‐oxasilaboratolate aus cis‐2‐Boryl‐1‐silylalkenen mit Kaliumhydroxid</title><author>Köster, Roland ; Seidel, Günter ; Wrackmeyer, Bernd ; Horchler, Klaus</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2087-d9cbb938897ac85f712537db7cf1415a24bd49da0cd0eea5f6ac6419d8281e983</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>cis‐2‐Boryl‐1‐silylalkenes</topic><topic>Cyclization</topic><topic>Hydroxy‐triorgano‐borates</topic><topic>Organoboron‐silicon heterocycles</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Köster, Roland</creatorcontrib><creatorcontrib>Seidel, Günter</creatorcontrib><creatorcontrib>Wrackmeyer, Bernd</creatorcontrib><creatorcontrib>Horchler, Klaus</creatorcontrib><collection>CrossRef</collection><jtitle>Chemische Berichte</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Köster, Roland</au><au>Seidel, Günter</au><au>Wrackmeyer, Bernd</au><au>Horchler, Klaus</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Organosubstituierte Kalium‐2,5‐dihydro‐1,2,5‐oxasilaboratolate aus cis‐2‐Boryl‐1‐silylalkenen mit Kaliumhydroxid</atitle><jtitle>Chemische Berichte</jtitle><date>1990-06</date><risdate>1990</risdate><volume>123</volume><issue>6</issue><spage>1253</spage><epage>1260</epage><pages>1253-1260</pages><issn>0009-2940</issn><eissn>1099-0682</eissn><abstract>Organosubstituted Potassium 2,5‐Dihydro‐1,2,5‐oxasilaboratolates from cis‐2‐Boryl‐1‐silylalkenes with Potassium Hydroxide The compounds (E)‐CH3ElIV(R2)2CR3C(C2H5)B(C2H5)2 [R2,2,3 = CH3: 1a; R2 = C2H5, R2,3 = CH3: 1b; R2,2 = C6H5, R3 = CH3: 1c; R2,2 = CH3, R3 = C6H5: 1d; R2,2 = CH3, R3 = c‐C6H11: 1e] add KOH in THF at – 20°C to form the pure solid 1:1 adducts KOH‐1ElIV with ElIV = Si, Sn, and Pb. Above ≥0°C compounds KOH‐1Si liberate quantitatively R2H to give the potassium salts of the cyclic anions K‐2a to K‐2e. With Me4NCl or Me3NHCl the corresponding salts Me4N‐2 or Me3NH‐2 are obtained from K‐2. Above ≈︁80°C KOH‐1aGe and KOH‐1aSn eliminate gas (CH4, C2H6) with formation of mixtures. The compounds KOH‐1ElIV and K‐2Si are characterized by multi‐NMR spectroscopy (1H, 11B, 13C, 17O, 29Si, 119Sn, 207Pb), and the NMR data of KOH‐1aElIV are compared to the data of the compounds .</abstract><cop>Weinheim</cop><pub>WILEY‐VCH Verlag</pub><doi>10.1002/cber.19901230607</doi><tpages>8</tpages></addata></record>
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source Wiley Online Library Journals Frontfile Complete
subjects cis‐2‐Boryl‐1‐silylalkenes
Cyclization
Hydroxy‐triorgano‐borates
Organoboron‐silicon heterocycles
title Organosubstituierte Kalium‐2,5‐dihydro‐1,2,5‐oxasilaboratolate aus cis‐2‐Boryl‐1‐silylalkenen mit Kaliumhydroxid
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