IT1261660B - New compounds having photochromic properties in the presence of oxygen and methods for their preparation
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New compounds having photochromic properties in the presence of oxygen and methods for their preparation
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IT1261660B
IT1261660BITMI922069AITMI922069AIT1261660BIT 1261660 BIT1261660 BIT 1261660BIT MI922069 AITMI922069 AIT MI922069AIT MI922069 AITMI922069 AIT MI922069AIT 1261660 BIT1261660 BIT 1261660B
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Dihydroderivatives of spiro-indolino-oxazine having the property of converting into photochromic compounds in the presence of oxygen, of general formula I: <IMAGE>
ITMI922069A1992-09-071992-09-07New compounds having photochromic properties in the presence of oxygen and methods for their preparation
IT1261660B
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